Gilbert m. Old High German gīsal 'pledge, hostage' + Old High German beraht, Old Saxon berht 'bright' from Proto-Germanic *berhtaz.

Brabant

Latin

● 1312 Ghiselberti (gen) JeanIII p. 15, Ghiselbertum (acc) ibid. p. 12, Ghiselbertus (nom) ibid. p. 2

England

Latin

● c1132 Gilleberto (abl) MemStMF II-I; 1155 Gilbertus (nom) FPD p. 121, fn. 1; 1161x1184 Gilbertus (nom) MDE p. 227, no. 1; 1181 Gileberti (gen) StPaulDom p. 109, Gileberto (abl) ibid. p. 111; 1185x1186 Gilleberti (gen) PR-XXXVI p. 4, Gilleberto (abl) ibid. p. 16, Gillebertus (nom) ibid. p. 9; 1189 Gilbertus (nom) GASurv p. 82, Gileberti (gen) ibid. p. 119, Gilebertus (nom) ibid. p. 82, Gileburtus (nom) ibid. p. 164, Gillebertus (nom) ibid. p. 225; c1198 Gilebertus (nom) ibid. p. 246; 1222 Giliberti (gen) StPaulDom p. 1, Gilibertus (nom) ibid. p. 8; 1240 Gilberti (gen) ibid. p. 119; 1246 Gilebertum (acc) PSS-II p. 6; 1256 Gilberti (gen) EARNb p. 5, Gilberto (dat) ibid. p. 5, Gilbertus (nom) ibid. p. 5; 1279–80 Gilberti (gen) WaHR-SK p. 67, Gilbertus (nom) ibid. p. 43, Gylbertus (nom) ibid. p. 40; 1296 Gilberti (gen) RCS-1 p. 94b, Gilberto (dat) ibid. p. 94b, Gilbertus (nom) ibid. p. 93a; 1300 Gilbertus (nom) ProcSuf-vol3 p. 240; 1323 Gilberto (abl) CTG-6 79, p. 302, Gilbertus (nom) ibid. 79, p. 302; 1377 Gilbertus (nom) FenPT-2 p. 4; 1381 Gilberti (gen) Suffolk1381 p. 91, Gilbertus (nom) FenPT-2 p. 6, Suffolk1381 p. 82; 1408 Gilbertus (nom) GCCYork p.12

Early Modern English

● 1530 Gylbart LIWill-III p. 32, Gylberd ibid. p. 43, Gylbert ibid. p. 57; 1543 Gilberd StNick-Sf p. 1; 1545 Gilbert BEmar-vol1 p. 3; 1550 Gilbert WillsInv XCV; 1570 Jelbart COmar-vol5 p. 4; 1576 Gilbert HAmar-vol9 p. 68; 1579 Gilberte BEmar-vol2 p. 3; 1590 Gilberte Bar-in-El p. 28; 1591 Gylbert HAmar-vol9 p. 50; 1592 Gylbert ibid. p. 51; 1593 Gilbert DEmar-vol2 p. 26; 1594 Gylbert WAmar-1 p. 98; 1595 Gilbert DEmar-vol2 p. 31; 1596 Guilbart StAnthonlin p. 38; 1597 Gilbert DEmar-vol2 p. 37

◑ 1550 Gilbot ExMar 2a

France

Latin

● c823 Gislebertus (nom) irminon-vol2 30, CE; 854 Gilbertus (nom) InsMacon VII; 1047 Gilberti (gen) CartNDSaintes I; 1079x1101 Gisleberto (abl) CartStPC XXXVII, Gislebertus (nom) ibid. IX; 1101x1129 Gislebertus (nom) ibid. XLI; 1107 Gislebertus (nom) ibid. XVII; a1108 Gislebertus (nom) ibid. XXI; 1115x1149 Gisleberto (abl) ibid. X; 1123 Giliberti (gen) CartNDJosaphat XII; 1126 Gillebertus (nom) CartStPC VII, Gislebertus (nom) ibid. IV; 1130x1150 Gislebertus (nom) ibid. XXVII; 1135 Gisleberto (abl) clairvaux-12thc 7, Gislebertus (nom) ibid. 7; 1138x62 Gillebertus (nom) ibid. 70, Gislebertus (nom) ibid. 61; 1142 Gillebertus (nom) ibid. 9, Gislebertus (nom) ibid. 9; 1147 Gillebertus (nom) ibid. 19, Gisleberto (abl) ibid. 17; c1150 Gileberti (gen) CartNDdOurscamp CXIII; 1154 Gileberto (abl) ibid. LIV; c1156 Gileberti (gen) ibid. XXXII; 1160 Gileberti (gen) ibid. CXIV; c1160 Gilebertus (nom) ibid. XVI, Gilleberti (gen) ibid. XVI; 1162 Gillebertus (nom) clairvaux-12thc 40; 1163 Gileberti (gen) CartNDdOurscamp XV, Gilleberti (gen) clairvaux-12thc 103; 1163–64 Gillebertus (nom) ibid. 116; 1164 Gillebertus (nom) ibid. 121; 1165 Gilleberto (dat) ibid. 126; 1166 Gilebertus (nom) CartNDdOurscamp XC; 1168 Gislebertus (nom) clairvaux-12thc 134; 1173 Gislebertus (nom) ibid. 157; 1179 Gilleberti (gen) ibid. 169, Gillebertus (nom) ibid. 178, Gisleberto (abl) ibid. 176, Gislebertus (nom) ibid. 176; 1180 Gislebertus (nom) RotScaNor p. 5; 1203 Gillebertus (nom) CartNDdOurscamp CXXV; 1209 Gilebertus (nom) ibid. LII; 1260 Guilebertus (nom) ArrestReg-volI IX, Candlemas, Guilleberti (gen) ibid. IX, Candlemas; 1273 Guilaberto (abl) RegToul-13thC p. 40, Guilabertus (nom) ibid. p. 39; 1301 Ghilebertus (nom) MemPic-vol17 p. 222, Gileberti (gen) ibid. p. 219, Gilebertus (nom) ibid. p. 197; 1378 Ghiselberto (dat) hanquetvol1 614, Gilberto (dat) ibid. 1602, Gilbertus (nom) ibid. no. 103, Giselberto (dat) ibid. 1235, Guiselberti (gen) ibid. 105

◑ 1101x1129 Gilo (nom) CartStPC XXII

Old French

● 1296 Gilebert paris1296 p. 3, Gillebert ibid. p. 20; 1313 Gilebert Paris1313 p. 13, Gilibert ibid. p. 9, Gillebert ibid. p. 52; 1327 Gilbert MemDocMan-2 p. 189, Gillebert ibid. p. 194, Guillebert ibid. p. 179

◑ 1313 Gilebin Paris1313 p. 43

Middle French

● 1388 Guilebert thierry, Guillebert ibid.; 1392 Gillebert MemBret-II col. 607; 1418 Gillebert HGParis p. 383; 1421 Gillebert favier 100; 1438 Gilbert ibid. 13

Germany

Latin

● 930 gisalbertus (nom) quix-vol1 10; c1006x1020 Gislebret (nom) ibid. 22; 1061 Giselbertus (nom) ibid. 60; 1100 Giselbertus (nom) ibid. 78; 1103 Giselberto (abl) ibid. 62, Giselbertus (nom) ibid. 62; 1108 Gilleberto (abl) ibid. 85; 1135 Giselbertus (nom) ibid. 64; 1186 Giselbertus (nom) quix-vol2 123; 1211 Giselbertus (nom) hennes-vol1 11; 1212 Giselberto (abl) quix-vol2 125; 1216 Giselbertus (nom) hennes-vol1 22; 1218 Giselbertus (nom) ibid. 30; 1219 Giselberti (gen) quix-vol1 73; 1231 Giselbertus (nom) hennes-vol1 86; 1249 Gisilbertus (nom) ibid. 131; 1259 Giselberto (abl) ibid. 186; 1401 gyselberto (dat) HD1401 no. 80

◑ 1108 Gillebertus (nom) quix-vol1 85

Ireland

Latin

● fin12thC Gilibertus (nom) MunDocIr III, p. 5, Gillibertus (nom) ibid. III, p. 3

Italy

Latin

● 1265x1339 Gisalberti (gen) BBC-Berg 37; 1522x1532 Gilibertus (nom) DSF p. 59, 49

The Netherlands

Latin

● 1330 Ghijselberti (gen) GesOIJ-1 p. 299; 1356 ghijselberti (gen) ibid. p. 301; 1361 Ghijselbertus (nom) ibid. p. 302

Scotland

Latin

● 1095 Gilberto (abl) ESC XV; 1238 Gilberto (abl) CartLevenax p. 13, CartStAndrew p. 2; 1309 Gilberto (abl) ibid. p. 2; 1376 Gilberti (gen) morton-vol1 16, Gilberto (dat) ibid. 16; 1381x1388 Gilberto (abl) CartNBer [p. xxxvii]; 1425 Gilberto (abl) RMSRS-2 20

Spain

Latin

● 1006 Gilabertu (nom) CDCB-XV MMCLXVI

Catalan

● 1510 Gilabert valencia1510 4593

Switzerland

Latin

● 1195 Gilliebertus (nom) CartHaut 29; 1214 Gillebertus (nom) ibid. 32; 1220 Gillebertus (nom) ibid. 37