Gertrude f. Old High German, Old Saxon gēr 'spear' + Proto-Germanic *þrūþ 'strength' or Proto-Germanic *trut 'maiden'.

Brabant

Latin

● 1312 Gertrudem (acc) JeanIII p. 15, Gertrudis (nom) ibid. p. 15

Czech Republic

Latin

● 1348 Gedrudi (dat) chlumecky 12; 1349 Gedrudis (gen) ibid. 110

◑ 1355 Geruschsa (nom) chlumecky 90

England

Middle English

● 1434–35 Geretrude EEW p. 103

◑ 1430 Troyde EEW p. 84

English

● 1548 Gertrud BarnstapleBap p. 6; 1560 Gartred ibid. p. 11; 1562 Getred OrpingtonKe p. 1; 1563 Gertrude bruton-vol1 p. 33; 1566 Gartrude ibid. p. 35; 1573 Gartrud ibid. p. 40; 1574 Gartrud ibid. p. 41, Gartrude ibid. p. 41; 1585 Gartrude ibid. p. 46; 1589 Gertrude DEmar-vol2 p. 19; 1592 Gertrude ibid. p. 24; 1596 Geritrude StAnthonlin p. 38

France

Latin

● 1135 Geltrude (abl) clairvaux-12thc 7; 1145 Gertrude (abl) ibid. 11; 1147 Geltrude (abl) ibid. 14, Gertrude (abl) ibid. 14, Gertrudi (dat) ibid. 14, Gertrudis (nom) ibid. 14; 1163 Jertrudis (gen) ibid. 99; 1163–64 Gertrude (abl) ibid. 106; 1164 Gertrude (abl) ibid. 120

Germany

Latin

● 1197 Gertrudis (gen) quix-vol1 83; 1207 Gertrudis (nom) hennes-vol1 8

Latvia

Latin

● 1286 Gertrudis (nom) RigSB 5

Middle Low German

● 1460x1465 Gerdrut Mettig1892 p. 10; 1461 Gerdrudt ibid. p. 5, Gerdrut ibid. p. 7; 1463 Gerdrut ibid. p. 6; 1464 Gerdrut ibid. p. 11; 1467 Gerdrut ibid. p. 11; 1472 Gedrut ibid. p. 11; 1509 Gerdrut ibid. p. 11

◑ 1461 Geze Mettig1892 p. 11; 1461x1479 Geſe ibid. p. 6; 1470 Geze ibid. p. 11; 1477 Geſe ibid. p. 11; 1507 Geſe ibid. p. 5; 1558 Gerda Arbuzov1920 p. 46; 1582x1594 Gerde ibid. p. 47