The English diminutive Wyot is witnessed in 1379 in the relational byname Wyotsoñ (WRYPT1 p. 146).
  
  
- Austria
- 
- Latin
- ◑ c1050 Wezil (nom) UrkStyria 58;
 c1070 Wezil (nom) ibid. 75;
 1074x1087 Wecil (nom) ibid. 77,
 Wecilinus (nom) ibid. 77;
 c1075 Wecil (nom) ibid. 78;
 c1080 Uvezil (nom) ibid. 84,
 Wezil (nom) ibid. 84;
 c1100 Wecelinus (nom) ibid. 92,
 Wecil (nom) ibid. 89;
 c1125 Wezil (nom) ibid. 115
 
- Belgium
- 
- Latin
- ● 1066 Widonis (gen) CartSPL1 II;
 1106 Guidonis (gen) CartStBert 2;
 1107 Wido (nom) ibid. 3;
 1110 Guido (nom) ibid. 4;
 1256 Guidone (abl) OHZI-II no. 10,
 Guidonem (acc) ibid. no. 4,
 Guidoni (dat) ibid. no. 12,
 Guidonis (gen) ibid. no. 4,
 Guydone (abl) ibid. no. 11;
 1257 Guido (nom) ibid. no. 24;
 1258? Guido (nom) ibid. no. 37,
 Guidonis (gen) ibid. no. 37
- Middle Dutch
- ● 1455 Gui (nom) MPSA p. 42;
 1457 Gui (nom) ibid. p. 42;
 1463 Gui (nom) ibid. p. 45;
 1465 Gui (nom) ibid. p. 45;
 1468 Guy (nom) ibid. p. 46;
 1469 Gui (nom) ibid. p. 46;
 1471 Gui (nom) ibid. p. 47;
 1472 Gui (nom) ibid. p. 48;
 1475 Gui (nom) ibid. p. 49;
 1476 Gui (nom) ibid. p. 50
- Dutch
- ● 1542 Gui MPSA p. 63;
 1546 Gui ibid. p. 65;
 1548 Gui ibid. p. 66;
 1550 Gui ibid. p. 67;
 1552 Gui ibid. p. 68;
 1554 Gui ibid. p. 69;
 1555 Gui ibid. p. 70
 
- Czech Republic
- 
- Latin
- ● 1351 Vitonis (gen) chlumecky 27
 
- England
- 
- Latin
- ● 1185x1186 Widonem (acc) PR-XXXVI p. 23,
 Widonis (gen) ibid. p. 23;
 1189 Guido (nom) GASurv p. 232,
 Wido (nom) ibid. p. 217;
 1222 Guido (nom) StPaulDom p. 5;
 1246 Widonem (acc) PSS-II p. 6;
 1256 Wydo (nom) EARNb p. 4;
 1279–80 Guydonis (gen) WaHR-SK p. 90;
 1340xc1450 Gwydo (nom) CovGuild-1 p. 8;
 1347 Guidone (abl) SocAntNor-3-3 no. 7;
 1357 Guidone (abl) ibid. no. 23;
 1566 Guy (nom) RegSoABap p. 12
- ◑ 1357 Guyoto (abl) SocAntNor-3-3 no. 23
- Anglo-French
- ● 1245–1250[1586] Guy Glover 158
- Dutch
- ● 1586 Guij AuFr Malapert;
 1589 Guido ibid. Malapert;
 1590 Guido ibid. Blauvoet;
 1592 Guido ibid. Malepart
- Early Modern English
- ● 1477 Gye BreadBk p. 12;
 1567/8 Gye RegBisham p. 2;
 1580 Guy WAmar-1 p. 98;
 1589 Guie RegBisham p. 5,
 Guy ibid. p. 5;
 1591 Gy COmar-vol5 p. 86;
 1597 Guye RegBisham p. 21;
 1598 Guy RegSoAMar p. 19
- Middle French
- ● 1574 guion WCS p. 10
 
- France
- 
- Latin
- ● c823 Guido (nom) irminon-vol2 94, Ved;
 1000x1030 Guidonis (gen) St-Barnard-Romans no. 144,
 Vuidonis (gen) ibid. no. 143;
 11thC Guido (nom) CartSPL1 I;
 1022 Wido (nom) DocMonSav p. 99;
 1030x70 Vuido (nom) St-Barnard-Romans no. 110,
 Vuidonis (gen) ibid. no. 110;
 1031 Widoni (gen) ibid. no. 107;
 1055 Guido (nom) StVdM-II 739,
 Guidone (abl) ibid. 739,
 Guidonis (gen) ibid. 739;
 1066 Guido (nom) ibid. 698;
 1067 Guido (nom) CartNDSaintes XII,
 Guidoni (dat) ibid. XII,
 Guidonis (gen) ibid. XII;
 1067x1074 Guidone (abl) ibid. XIII;
 1067x1086 Guidonis (gen) ibid. XIV;
 1083 Wido (nom) St-Barnard-Romans 126,
 Widonis (gen) ibid. 126;
 1088 Wido (nom) CartSPL1 VI;
 1088x1119 Guidonis (gen) St-Barnard-Romans no. 149;
 a1089x1101 Guido (nom) CartStPC XXXIX;
 1090 Wido (nom) CartSPL1 VII;
 fin11thC Guidonis (gen) St-Barnard-Romans no. 154;
 1101 Guido (nom) CartSPL1 X;
 1101x1105 Widonis (gen) ibid. XI;
 1101x1129 Guido (nom) CartStPC XXXII,
 Guidone (abl) ibid. XXVIII;
 1107 Guido (abl) ibid. XVII;
 1108 Guido (nom) St-Barnard-Romans no. 155,
 Guidone (abl) ibid. no. 155;
 1115 Guido (nom) CartNDJosaphat V;
 1123 Widonis (gen) ibid. XII;
 1125x1136 Widonis (gen) CartYonne1 CXXXIX;
 1126 Guido (nom) CartStPC IV;
 1131 Guido (nom) clairvaux-12thc 4;
 1133 Widonis (gen) CartNDdOurscamp XXX;
 1135 Guido (nom) clairvaux-12thc 7,
 Guidone (abl) ibid. 7,
 Guidonis (gen) ibid. 7;
 1138x62 Guido (nom) ibid. 84,
 Wido (nom) ibid. 87;
 1138x1148 Guido (nom) ibid. 21;
 1139 Guido (nom) HAP p. 372;
 1141 Guido (nom) CartNDSaintes VII;
 1143 Guido (nom) HAP p. 373,
 Guidonis (gen) clairvaux-12thc 10;
 1143x1146 Wido (nom) ibid. 12;
 1146 Guido (nom) CartNDSaintes VIII,
 Guidone (abl) HAP p. 374,
 Guidonis (gen) CartNDdOurscamp CXII;
 1147 Guido (nom) clairvaux-12thc 14,
 Guidone (abl) ibid. 14,
 Guidonis (gen) ibid. 15,
 Wido (nom) ibid. 14,
 Widone (abl) ibid. 14;
 1147x1158 Guido (nom) ibid. 34;
 1147x1162 Guido (nom) ibid. 48,
 Guidone (abl) ibid. 43,
 Wido (nom) ibid. 54;
 1153 Guido (nom) CartNDSaintes IX;
 1155 Wido (nom) clairvaux-12thc 30;
 1158x1170 Widonis (gen) ibid. 138;
 1159 Guido (nom) StVdM-II 736,
 clairvaux-12thc 37,
 Guidonem (acc) StVdM-II 736,
 Guidonis (gen) clairvaux-12thc 37;
 1162 Wido (nom) ibid. 40;
 a1163 Guidonis (gen) ibid. 96;
 1163 Guidone (abl) ibid. 99,
 Guidonis (gen) ibid. 99,
 Guis (nom) ibid. 94,
 Widonis (gen) ibid. 99;
 1163–64 Guido (nom) ibid. 106,
 Guidone (abl) ibid. 113;
 1164 Guido (nom) ibid. 120,
 Guidone (abl) ibid. 121,
 Guidonis (gen) ibid. 120;
 1166 Guido (nom) ibid. 128;
 c1170 Guido (nom) CartNDdOurscamp LXXXIV;
 1170 Guidonis (gen) clairvaux-12thc 137;
 1171 Guido (nom) ibid. 140;
 1173 Guidonis (gen) ibid. 151;
 1175 Guidonis (gen) ibid. 162;
 c1175–1180 Guidonis (gen) ChartCaen2 p. 65,
 Wido (nom) ibid. p. 62;
 1179 Guido (nom) clairvaux-12thc 176,
 Guidone (abl) ibid. 178,
 Guidonis (gen) ibid. 169,
 Wido (nom) ibid. 176;
 1180 Guido (nom) CartNDdOurscamp LV;
 c1180 Guido (nom) ibid. LXVIII;
 1180 Guidone (abl) RotScaNor p. 21,
 Widone (abl) ibid. p. 19;
 1187 Guidone (abl) CartNDdOurscamp LVII,
 Guidonis (gen) ibid. LVII;
 1188 Guido (nom) NotSLdN II;
 1190 Guido (nom) CartNDdOurscamp CII;
 1201 Guido (nom) ibid. LXI;
 1205 Guido (nom) ibid. XXXIII;
 1207 Guido (nom) ibid. CXXIX,
 Guidonis (gen) ibid. XLII;
 1209 Guido (nom) HAP p. 376;
 1217 Guido (nom) NDParisII 2-LVI;
 1218 Guido (nom) CartNDdOurscamp CXXXIV,
 Guidonis (gen) ibid. CXXXIV;
 1223 Guido (nom) ChartCaen2 14;
 1227 Guido (nom) HAP p. 378;
 1246 Guido (nom) NDParisII 2-CVI,
 Guidone (abl) ibid. 2-CVI;
 1252 Guido (nom) ibid. 1-II,
 Guidoni (dat) SocAntNor-3-3 13;
 1256 Guido (nom) OHZI-II no. 2;
 1257 Guido (nom) ArrestReg-volI II, St. Martin;
 1258 Guido (nom) ibid. XXIX, Candlemas;
 1259 Guido (nom) ibid. X, St. Martin,
 Guidonem (acc) ibid. XVII, Pentecost;
 1260 Guido (nom) ibid. VI, Candlemas,
 Guidonis (gen) ibid. XXIII, Ascension;
 1261 Guidonem (acc) ibid. III, St. Martin;
 1274 Guido (nom) RHF-VIII p. 58;
 1292 Guido (nom) MemBret-I 1102;
 1300 Guidonis (gen) CartNDdOurscamp LXIX;
 1301 Guidoni (gen) MemPic-vol17 p. 199,
 Guidonis (gen) ibid. p. 210;
 1345 Guidonis (gen) CDEM-7.2 613;
 1378 Guido (nom) hanquetvol1 564,
 Guidoni (dat) ibid. 27,
 Guidonis (gen) ibid. 564,
 Guidony (dat) ibid. 658,
 Guy (nom) ibid. 2107;
 1471 Guidone (abl) MHCG2 235
- ◑ 1147 Guidonellus (nom) clairvaux-12thc 19;
 1260 Guioti (gen) ArrestReg-volI XXIII, Ascension;
 1269 Guidoni (gen) NDParisII 2-III
- Old French
- ● 1292 Guy (obl) MemBret-I 1101;
 1296 Gui (obl) HistHdVParis p. 131;
 1298 Gui (obl) ibid. p. 139;
 1299/1300 Guy (obl) HAP p. 387;
 1301 Guis (nom) ArchReimsII1 XVIII;
 1313 Gui Paris1313 p. 3
- ◑ 1292 Guiot 1292paris p. 1,
 (obl) HistHdVParis p. 112;
 1293 Guiet (obl) ibid. p. 123;
 1296 Guiot paris1296 p. 3;
 1313 Guiot Paris1313 p. 7;
 1327 Guyot MemDocMan-2 p. 191;
 1346 Guiot (nom) HAP p. 310,
 Guioz (nom) ibid. p. 309
- Middle French
- ● 1358 Guy LeCoq p. 381;
 1367 Guy ActsCharlesV no. 413;
 1392 Gui MemBret-II col. 609,
 Guy ibid. col. 602;
 1393 Guy ibid. col. 624;
 1415[1469x1471] Guy Waurin p. 228;
 1418 Guy HGParis p. 375;
 1421 Guy favier 844;
 1455 Guy HRAVP-3 p. 353;
 1493 Gui MSR1838 p. 378;
 1562 Guy RegPCC-1 p. 12;
 1566 Guy ibid. p. 224;
 1571 Guy ibid. p. 479;
 1587 Guy RTFProvins 236
- ◑ 1386 Guion MemBret-II col. 514;
 1387 Guiot beauchet-vol1 p. 15;
 1392 Guiet MemBret-II col. 605,
 Guion ibid. col. 600,
 Guiot ibid. col. 597,
 Guyon ibid. col. 598;
 1418 Guion HGParis p. 388,
 Guiot DdB1418 p. 203,
 HGParis p. 375,
 Guyon DdB1418 p. 214,
 Guyot ibid. p. 210,
 HGParis p. 387;
 1421 Guiot favier 76;
 1423 Guion ibid. 23,
 Guiot ibid. 219;
 1438 Guion ibid. 221,
 Guiot ibid. 302;
 1566 Guyon RegPCC-1 p. 257;
 1571 Guyon ibid. p. 626;
 1587 Guyot RTFProvins 123
 
- Germany
- 
- Latin
- ● 997 Vuido (nom) quix-vol1 49;
 c1070 Wito (nom) UrkStyria 72;
 1122 Widonis (gen) quix-vol1 27;
 1157 Guido (nom) ibid. 44;
 1186 Guido (nom) quix-vol2 123;
 1216 Guido (nom) hennes-vol1 25;
 1266 Guido (nom) UrkMeck1 no. LX
- ◑ 1098 Vuizelonis (gen) quix-vol1 25;
 1180 Wezelo (nom) ibid. 34
 
- Ireland
- 
- Latin
- ◑ fin12thC Wiet (nom) MunDocIr III, p. 14
 
- Israel
- 
- Latin
- ● 1115 Wido (nom) CartNDJosaphat VI;
 1120 Wido (nom) ibid. VIII
 
- Italy
- 
- Latin
- ● 1100 Guidi (gen) RCI-Cam1 626;
 1138 Guido (nom) HAP p. 331;
 1142 Guido (nom) ibid. p. 333;
 1179 Guido (nom) CartHaut 25,
 Guidonis (gen) ibid. 25;
 1189 Guido (nom) ChStBo1 I,
 Guidonis (gen) ibid. I;
 1195 Guido (nom) ibid. II,
 Guidone (abl) ibid. II;
 1198 Guido (nom) ibid. III,
 Guidone (abl) ibid. III,
 Guidonis (gen) ibid. III;
 1220 Guido (nom) hennes-vol1 49;
 1224 Guido (nom) UrkRott-1 17,
 Guidonis (gen) HAP p. 352;
 1253 Guidonis (gen) MonRav-1 CLIX;
 1270 Guidus (nom) BBC-Berg p. XLII;
 1273 Guidottis (abl) ibid. p. XLII;
 1285 Guidi (gen) Perugia1285 p. 161,
 Guidonis (gen) ibid. p. 153;
 1304 Guido (nom) AnnMin6 XII;
 1310 Guido (nom) MonRav-2 CCCL;
 1326 Guido (nom) Friuli-14thC no. 435,
 Guidoni (dat) ibid. no. 435;
 1363 Guidonis (gen) Livi p. 143;
 1366 Guidi (gen) ibid. 35,
 Guido (nom) ibid. 45,
 Guidone (abl) ibid. 18,
 Guidonis (gen) ibid. 86;
 1367 Guidi (gen) ibid. 116,
 Guidonis (gen) ibid. 165;
 1368 Guidonis (gen) ibid. 202;
 1369 Guidonis (gen) ibid. 244;
 1397 Guido (nom) StDav-1 p. 8,
 Guidonem (acc) ibid. p. 12,
 Guidoni (dat) ibid. p. 2
- ◑ 1161 Guienzon (nom) Livi p. 41;
 1195 Guidoctus (nom) ChStBo1 II;
 1198 Guidoctus (nom) ibid. III,
 Guidotti (gen) ibid. III;
 1265x1339 Guidoti (gen) BBC-Berg 272,
 Guydeti (gen) ibid. 340,
 Guydoti (gen) ibid. 192;
 1273 Guidonus (nom) ibid. p. XLII,
 Guidottus (nom) ibid. p. XLII;
 1277 Guidonus (nom) ibid. p. XLII,
 Guidoti (gen) ibid. p. XLII;
 1282 Guidoti (gen) ibid. p. XLVII;
 1285 Guidarelli (gen) Perugia1285 p. 154,
 Guidarellus (nom) ibid. p. 153,
 Guiderigii (gen) ibid. p. 160,
 Guidutii (gen) ibid. p. 157;
 1304 Guidotti (gen) BBC-Berg p. XLVI;
 1310 Guidotus (nom) MonRav-2 CCCL;
 1367 Guiducci (gen) Livi 105/106,
 Guiduccius (nom) ibid. 152
 
- The Netherlands
- 
- Latin
- ● 814x815 Wido (nom) OrkGZ no. 27;
 1311 Guijdone (abl) GesOIJ-1 p. 298
 
- Poland
- 
- Latin
- ● 1267 Guido (nom) CDT1 XIX;
 1282 Gwido (nom) UrkMeck1 no. LXXVII
 
- Scotland
- 
- Latin
- ● 1124 Guido (nom) ESC L
 
- Spain
- 
- Catalan
- ◑ 1510 Guixot valencia1510 1243
 
- Switzerland
- 
- Latin
- ● 1134 Guido (nom) CartHaut 1,
 Guidoni (dat) ibid. 1,
 Guydo (nom) ibid. 1;
 1141 Guido (nom) ibid. 3,
 Guidoni (dat) ibid. 3;
 1150 Guido (nom) ibid. 4;
 1154 Guido (nom) ibid. 5;
 1161 Wido (nom) ibid. 10;
 1162 Widonis (gen) ibid. 12;
 1163 Wido (nom) ibid. 13;
 1179 Wido (nom) ibid. 24;
 1195 Guido (nom) ibid. 29;
 1211 Guido (nom) CartChart 5;
 1220 Guido (nom) CartHaut 36;
 1235 Guido (nom) CLC p. 34,
 Guidoni (dat) ibid. p. 34,
 Guidonis (nom) ibid. p. 25,
 Wido (nom) ibid. p. 46;
 1242 Guido (nom) CartHaut 44;
 1246 Guido (nom) ibid. 46,
 Guidonis (gen) ibid. 46;
 1247 Guido (nom) ibid. 49,
 Guidonis (gen) ibid. 49;
 1343 Guyon (nom) Ob-SPVn (142);
 1522 Guido (nom) MHCG2 293,
 Guidone (abl) ibid. 293
- Middle French
- ◑ 1354 Guyot MHN DLIII
 
- Wales
- 
- Latin
- ● 1397 Guidonis (gen) StDav-1 p. 2
 
Cite as: A. Brown, J. Uckelman, S.L. Uckelman. "Guy". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2023, no. 1. http://dmnes.org/2023/1/name/Guy.