Dictionary of Medieval Names
from European Sources

Otto m. Old High German ōt, Old Saxon ōd 'wealth, riches'.

The name of four Holy Roman Emperors, a Frankish king, and a number of saints, as well as the baptismal name of a 14th C pope.

The forms Otto and Otho are preferred in Germany, with Odo being more common in France. In Ireland, Odo was sometimes used as an anglicization of Aodh.

Austria
Latin
942 Otto (nom) UrkStyria 22, Ottonis (gen) ibid. 22; 979 Otto (nom) ibid. 28; c1065 Ottonis (gen) ibid. 67; c1066 Otto (nom) ibid. 68; c1070 Otto (nom) ibid. 74; c1100 Otto (nom) ibid. 89, Ottonis (gen) ibid. 89; 1103 Otto (nom) ibid. 94a; c1128 Otto (nom) ibid. 120, Ottonis (gen) ibid. 118a; 1237 Otto (nom) hennes-vol1 96; 1277 Ottone (abl) FRA-XXXL 355
Belgium
Latin
1107 Odo (nom) CartStBert 3, Odone (abl) ibid. 3, Odonis (gen) ibid. 3; 1238 Otto (nom) OvdFB 3
Dutch
1597x1598 Otto BoonenGes p. 378
Brabant
Latin
1312 Ottho (nom) JeanIII p. 25, Otto (nom) ibid. p. 28
Czech Republic
Latin
1349 Ottoni (dat) chlumecky 36; 1353 Ottoni (dat) ibid. 97; 1356 Otto (nom) ibid. 130
1351 Otycone (abl) chlumecky 52, Otyk (nom) ibid. 35
Middle High German
1331 Ott (nom) Rössler1 36; c1339 Otto (nom) ibid. 93; 1342 Ott (nom) ibid. 98; 1349 Otten (gen) ibid. 48; 1389 Otto (nom) ibid. 118
Denmark
Danish
1581 Otthe KD-1 no. 362
England
Latin
1185x1186 Oto (nom) PR-XXXVI p. 11; 1189 Odo (nom) GASurv p. 151, Odonis (gen) ibid. p. 145; 1222 Odo (nom) StPaulDom p. 22, Odonis (gen) ibid. p. 23; 1246 Odonem (acc) PSS-II p. 6, Odonis (gen) ibid. p. 6; 1296 Odo (nom) RCS-1 p. 93b, Odonis (gen) ibid. p. 95a
Estonia
Middle Low German
1431 Otte BbRT p. 355
1385 Otke BbRT p. 338; 1386 Otke ibid. p. 338; 1406 Otke ibid. p. 344; 1433 Otke ibid. p. 356; 1434 Otke ibid. p. 357; 1436 Otke ibid. p. 358; 1592 Ottste Tiik1977 p. 287
Finland
Early Modern Swedish
1548 Ottes (gen) Audén1980 p. 169
France
Latin
699 Otto (nom) DCEL-2 Add. X; c823 Odo (nom) irminon-vol2 94, Ved; 937x93 Odon (acc) St-Bernard-Romans no. 99, Odoni (gen) ibid. no. 80; 1067 Odo (nom) CartNDSaintes XII, Odonis (gen) ibid. XII; 1079x1081 Odo (nom) ibid. XXI, Oto (nom) ibid. XXI; 1079x1101 Odo (nom) CartStPC IX; 1082x1087 Odo (nom) St-Bernard-Romans no. 120; 1101x1129 Odo (nom) CartStPC XXII, Odone (abl) ibid. XXVIII; a1108 Odo (nom) ibid. XXI; a1116 Odo (nom) ibid. XX, Odonis (gen) ibid. XX; 1123 Odonis (gen) CartNDJosaphat XII; 1130 Udone (abl) CartStPC VIII; 1135 Odo (nom) clairvaux-12thc 7, Odone (abl) ibid. 7, Oto (nom) ibid. 7; 1138x62 Odo (nom) ibid. 66, Odonis (gen) ibid. 66; c1140 Odo (nom) CartNDdOurscamp LXXXIII; 1143x1146 Odo (nom) clairvaux-12thc 12; 1146 Odo (nom) CartNDSaintes VIII; 1147 Hoto (nom) clairvaux-12thc 15, Odo (nom) ibid. 14, Odone (abl) ibid. 14; c1147 Odonis (gen) CartNDdOurscamp LXII; 1147 Odonis (gen) clairvaux-12thc 17; 1147x1162 Odo (nom) ibid. 44; 1151 Odo (nom) ibid. 23; 1153 Odo (nom) CartNDSaintes IX; 1154 Odo (nom) CartNDdOurscamp LIV, clairvaux-12thc 27; c1156 Odonis (gen) CartNDdOurscamp XXXII; 1159 Odo (nom) StVdM-II 736; 1160 Odonis (gen) CartNDdOurscamp CXIV; c1160 Odonis (gen) ibid. XVI; 1162 Odonis (gen) clairvaux-12thc 39; 1163 Oddo (nom) ibid. 94, Odo (nom) ibid. 99, Odonis (gen) ibid. 99; 1163–64 Odo (nom) ibid. 106, Odonis (gen) ibid. 106; 1164 Odo (nom) ibid. 120, Odonis (gen) ibid. 120; 1165 Odo (nom) ibid. 125; 1166 Odo (nom) ibid. 130, Odone (abl) ibid. 130; 1171 Odo (nom) ibid. 140; 1173 Odo (nom) ibid. 154; 1174 Odo (nom) CartNDdOurscamp CXX, clairvaux-12thc 161, Odone (abl) CartNDdOurscamp CXX, Odonis (gen) ibid. CXX; c1175–1180 Odo (nom) ChartCaen2 p. 69, Odonis (gen) ibid. p. 61; 1178 Odo (nom) clairvaux-12thc 166, Odone (abl) ibid. 166, Odonis (gen) ibid. 166; 1179 Odo (nom) ibid. 172, Odone (abl) ibid. 176, Odonis (gen) ibid. 172; 1180 Odone (abl) CartNDdOurscamp LV, RotScaNor p. 3, Odonis (gen) ibid. p. 14, Otonis (gen) ibid. p. 1; 1183 Odone (abl) CartNDdOurscamp LVI; 1187 Odonis (gen) ibid. LVII; 1190 Odo (nom) ibid. CIII; 1194 Odone (abl) ibid. CLVI; 1196 Odo (nom) ibid. CXXXIX; c1200 Odo (nom) CartSavII 201; 1201 Odo (nom) CartNDdOurscamp LXI, NDParisII 1-IX, Odonis (gen) ibid. 2-XLVIII; 1203 Odo (nom) ibid. 2-LXXIX; 1204 Odo (nom) ibid. 2-LXXXVI; 1206 Odo (nom) CartNDdOurscamp XIV, NDParisII 2-LXIX; 1209 Odonis (gen) CartNDdOurscamp LII; 1214 Odonis (gen) ibid. CXLI; a1215 Odonis (gen) NDParisII 2-LXXIII; 1217 Odo (nom) CartNDdOurscamp XXXI, Odonis (gen) ibid. XXXI; 1227 Odone (abl) ibid. XLV; 1236 Odo (nom) NDParisII 2-XXXIX; 1238 Odonis (gen) CartNDdOurscamp CXXX; 1255 Odo (nom) ArrestReg-volI IX, Candlemas; 1257 Odone (abl) ibid. XV, BMV; 1258 Odo (nom) ibid. XXIX, Candlemas; 1259 Odonem (acc) ibid. II, BMV, Odonis (gen) ibid. XIII, St. Martin; 1260 Odo (nom) ibid. VI, Candlemas; 1267 Odo (nom) NDParisII 2-XXVII; 1273 Odo (nom) ibid. 2-XLIII; 1283–86 Otho (nom) GasReg-A; 1287 Otho (nom) ibid.; 1301 Odonis (gen) MemPic-vol17 p. 258; 1310/11 Otho (nom) GasReg-A; 1310 Otho (nom) ibid.; 1313 Odonem (acc) CartNDdOurscamp LXXXVIII; 1345 Ottoni (dat) CDEM-7.2 626; 1378 Odo (nom) hanquetvol1 581
1147 Odelini (gen) clairvaux-12thc 14; 1179 Odinus (nom) ibid. 176; 1260 Odinus (nom) ArrestReg-volI XII, Candlemas
Old French
1296 Eude paris1296 p. 27, Heude ibid. p. 14; 1313 Eude Paris1313 p. 18, Heude ibid. p. 24, Œude ibid. p. 15
1133 Eudon (obl) tailliar no. 1; 1292 Otelin 1292paris p. 2; 1313 Houdet Paris1313 p. 3, Oudin ibid. p. 6
Middle French
1392 Oudinet MemBret-II col. 611; 1418 Odin HGParis p. 376, Oudin ibid. p. 380, Oudinet ibid. p. 373
Germany
Latin
802 Attonem (acc) FRA-XXXL 8, Attoni (dat) ibid. 7, Attonis (gen) ibid. 8; 816 Atto (nom) ibid. 9; 822x875 Hodo (nom) TradCorb §4, Oddo (abl) ibid. §123, Oddone (abl) ibid. §97; 937 Otto (nom) HambUrk-vol1 XXXI, Ottoni (dat) ibid. XXXII, Ottonis (gen) ibid. XXXI; 941 Otto (nom) quix-vol1 11, Ottonis (gen) ibid. 11; 947 Otto (nom) ibid. 12, Ottonis (gen) ibid. 12; 948 Ottho (nom) ibid. 88, Otthone (abl) ibid. 88, Otthonis (gen) ibid. 88; 954 Otto (nom) UrkStyria 23, Ottone (abl) ibid. 23, Ottonis (gen) ibid. 23; 961 Otto (nom) ibid. 24, Ottone (abl) ibid. 24, Ottonis (gen) ibid. 24; 965 Otto (nom) HambUrk-vol1 XLI, Ottonis (gen) ibid. XLI; 966 Otto (nom) ibid. XLIII, quix-vol1 13, Ottonis (gen) HambUrk-vol1 XLIII, quix-vol1 13; 967 Otto (nom) HambUrk-vol1 XLIV, Ottonis (gen) ibid. XLIV; 972 Otto (nom) quix-vol1 15, Ottonis (gen) ibid. 15; 974 Ottho (nom) ibid. 89, Otthonis (gen) ibid. 89, Otto (nom) HambUrk-vol1 XLV, Ottonis (gen) ibid. XLV; 977 Ottonis (gen) UrkStyria 27; 980 Otto (nom) ibid. 29, Ottonis (gen) ibid. 29; 983 Otto (nom) HambUrk-vol1 XLVI, Ottonis (gen) ibid. XLVI; 985 Ottho (nom) quix-vol1 90, Otthonis (gen) ibid. 90, Otto (nom) UrkStyria 32, Ottonis (gen) ibid. 32; 988 Otto (nom) HambUrk-vol1 XLIX, Ottonem (acc) ibid. LI, Ottonis (gen) ibid. XLIX; 997 Ottho (nom) quix-vol1 91, Otthoni (dat) ibid. 49, Otthonis (gen) ibid. 91, Otto (nom) ibid. 16, Ottonis (gen) ibid. 16; 998 Otto (nom) ibid. 17, Ottonis (gen) ibid. 17; 1000 Otto (nom) UrkStyria 33, quix-vol1 19, Ottonis (gen) UrkStyria 33, quix-vol1 19; 1001 Otto (nom) HambUrk-vol1 LIV, Ottonis (gen) ibid. LIV; 1003 Ottonis (gen) ibid. LVI; 1009 Oddo (nom) ibid. LVIII, Oddonem (acc) ibid. LVIII; 1061 Vdo (nom) quix-vol1 60, Vdone (abl) ibid. 60; 1064 Vdo (nom) ibid. 92; 1112 Ottonis (gen) ibid. 26; 1114 Ottonis (gen) UrkStyria 99; 1134 Otto (nom) quix-vol1 97; 1136 Otto (nom) ibid. 98, Udo (nom) ibid. 98; 1138 Vdo (nom) ibid. 28; 1142 Ottonis (gen) mairhofer VII; 1147 Ottonis (gen) quix-vol1 29; 1151 Otto (nom) mairhofer XXXVI; 1165 Ottonis (gen) quix-vol1 31; 1194 Otto (nom) ibid. 54; 1207 Otto (nom) hennes-vol1 8; 1210 Otto (abl) ibid. 10, Ottone (abl) CDL-1.1.1 IV; 1211 Ottone (abl) hennes-vol1 11; 1212 Otto (nom) ibid. 12, Ottone (abl) quix-vol1 103; 1213 Otto (nom) hennes-vol1 14; 1214 Otto (nom) ibid. 15; 1215 Otto (nom) quix-vol2 126; 1216 Oddo (nom) hennes-vol1 20, Otto (nom) ibid. 24; 1217 Otto (nom) ibid. 28; 1219 Otto (nom) ibid. 39, Vdonis (gen) quix-vol1 73; 1220 Otto (nom) hennes-vol1 44, Ottonis (gen) quix-vol2 129; 1221 Otto (nom) ibid. 130; 1222 Otto (nom) quix-vol1 74, quix-vol2 132; 1231 Otto (nom) CDL-1.1.1 XI; 1234 Otto (nom) hennes-vol1 89; 1240 Otto (nom) ibid. 104; 1249 Otto (nom) ibid. 134; 1250 Otto (nom) ibid. 138, Ottonis (gen) ibid. 138; 1251 Otto (nom) ibid. 142; 1253 Otto (nom) ibid. 145; 1260 Otto (nom) ibid. 187; 1261 Ottone (abl) FRA-XXXL 207; 1301 Otto (nom) UrkHan 3; 1305 Otto (nom) CDL-1.2.1 CXCIII; 1309 Otto (nom) VFBStralsund 14; 1338 Otto (nom) UrkHeil1 146; 1351 Otto (nom) UrkHan 8; 1394 Ottonis (gen) SMM p. 178; 1401 Ottoni (dat) HD1401 no. 7, ottonis (gen) ibid. no. 128
Middle High German
1293 Ot (nom) UrkWitt-II 189, Ott ibid. 187, Otte (nom) ibid. 188, Otten (acc) ibid. 187
Early New High German
1401 Ott (nom) UrkKH-2 907; 1429 Ottens (gen) mairhofer DCCXXXII; 1497 Ott Nurn1497 338
Middle Low German
1332 Otte UrkHan 5; 1347 Otten (acc) ibid. 7; 1453 Otte VFBStralsund 678
Ireland
Latin
fin12thC Odo (nom) MunDocIr III, p. 22; 1457 Odo (nom) RegOct 84, Odonem (acc) ibid. 84; 1460 Odo (nom) ibid. 25, Odone (abl) ibid. 28, Odonem (acc) ibid. 25, Odonis (gen) ibid. 25; 1496 Odo (nom) ibid. 35, Odonem (acc) ibid. 35, Odoni (dat) ibid. 35
Italy
Latin
967 Otto (nom) RCI-Cam1 3; 970 Otto (nom) UrkStyria 25, Ottonis (gen) ibid. 25; 984 Ottonis (gen) ibid. 31; 999 Otho (nom) HGSav-4.1 p. 1, Ottonis (gen) ibid. p. 2; 1096 Otto (nom) UrkStyria 88; 1164 Otonis (gen) Livi p. 41; 1224 Otto (nom) hennes-vol1 65; 1236 Otone (abl) TirNot1 8, Ottonem (acc) ibid. 7, Ottoni (dat) ibid. 15, Ottonis (gen) ibid. 7; 1237 Otto (nom) ibid. 585, Ottonis (gen) ibid. 587; 1245 Otto (nom) hennes-vol1 120; 1257 Otto (nom) ibid. 165; 1261 Otto (nom) FRA-XXXL 209; 1367 Ottonis (gen) SMM p. 129
1236 Ottolini (gen) TirNot1 11, Ottolinum (acc) ibid. 6; 1265x1339 Utulini (gen) BBC-Berg 134; 1285 Octonelli (gen) Perugia1285 p. 158, Oddoli (gen) ibid. p. 161; 1310 Ottolinus (nom) MonRav-2 CCCL; 1326 Ottolino (abl) Friuli-14thC no. 422, Ottolinus (nom) ibid. no. 422
Latvia
Latin
1288 Otto (nom) RigSB 528, Ottoni (dat) ibid. 388; 1289 Otto (nom) ibid. 135, Ottoni (dat) ibid. 339; 1290 Otto (nom) ibid. 137; 1293 Otto (nom) ibid. 163; 1294 Otthoni (dat) ibid. 170; 1296 Ottoni (dat) ibid. 68; 1299 Ottonis (gen) ibid. 277
Middle Low German
1462 Otte Arbusow p. 99
The Netherlands
Latin
1235 Otto (nom) hennes-vol1 93; 1243 Otto (nom) ibid. 112; 1288 Odo (nom) GesOIJ-1 p. 296, Odomis (gen) ibid. p. 296; 1291 Otto (nom) ibid. p. 297, Ottonis (gen) ibid. p. 297; 1311 Odo (nom) ibid. p. 298, Odonis (gen) ibid. p. 298; 1347 otto (nom) ibid. p. 300; 1349 Odonis (gen) ibid. p. 300
Middle Dutch
1382 Ottens (gen) GesOIJ-4 p. 186
Poland
Middle High German
1324x1332 Otto SBGlatzer p. 1
Scotland
Latin
1214–1226 Odonis (gen) morton-vol1 1
Spain
Latin
889 Oddone (nom) CDCB-XV MMXVII; 1016 Odo (nom) ibid. MMCLXXIII; 1192 Otonis (gen) ibid. MMCCVIII
Sweden
Old Swedish
1383 Vd (gen) SRA-vol2 no. 1919
Switzerland
Latin
1155 Otho (nom) CartHaut 6; 1157 Otto (nom) ibid. 7; 1166 Octone (abl) ibid. 19, Otho (nom) ibid. 20; 1179 Hoto (nom) ibid. 24; 1180 Octo (nom) ibid. 26; 1186 Otho (nom) ibid. 27; 1215 Otho (nom) ibid. 34; 1220 Oto (nom) ibid. 37
Cite as: R. Le Get, S.L. Uckelman. "Otto". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2017, no. 1. http://dmnes.org/2017/1/name/Otto.