In English, diminutive forms are almost exclusively found.

England

Latin

● 1562/3 Gulielma (gen) RegSoABap p. 6

Early Modern English

● 1580 William COmar-vol5 p. 85

◑ 1540 Wylmott BarnstapleBap p. 1; 1542 Wylmot ibid. p. 3; 1544 Wylmot ibid. p. 4; 1545 Wylmott ibid. p. 4; 1547 Wilmot ibid. p. 5, Wylmot ibid. p. 6; 1551 Wyllmott ibid. p. 6; 1552 Wylmet ibid. p. 7; 1559 Wilmote DEmar-vol1 p. 80; 1568 Wilmot ExMar 2b; 1579 Wilmoute DEmar-vol1 p. 84; 1582 Wilmott DEmar-vol2 p. 7; 1583 Wylmett COmar-vol5 p. 85; 1584 Willmot DEmar-vol2 p. 10; 1586 Willmot ibid. p. 12, Wilmote DEmar-vol1 p. 85; 1587 Willmot DEmar-vol2 p. 13; 1588 Willmet COmar-vol2 p. 23, Willmot DEmar-vol2 p. 15; 1589 Willmot ibid. p. 18, Wylmot COmar-vol5 p. 8; 1590 Wilmot DEmar-vol2 p. 20, Wylmet COmar-vol5 p. 86; 1592 Willmot DEmar-vol2 p. 24, Wilmott COmar-vol2 p. 72; 1593 Willmot DEmar-vol2 p. 27, Wilmot ibid. p. 26; 1594 Willmot ibid. p. 30, Wilmott ibid. p. 29; 1597 Wilmot ibid. p. 37; 1598 Wilmot ibid. p. 37, Wilmott ibid. p. 38

Middle French

◑ 1573 gillemette WCS p. 8; 1574 gillemette ibid. p. 10; 1584 gillemette ibid. p. 19; 1585 Guillemette ibid. p. 19; 1588 Guillemette ibid. p. 89; 1592 Guillemine ibid. p. 50; 1596 Guillemine ibid. p. 52

France

Latin

● 1273 Guillelma (nom) RegToul-13thC p. 27, Guillelmam (acc) ibid. p. 41, Guillelme (gen) ibid. p. 27, Wilellme (gen) ibid. p. 30; 1274 Guilelma (nom) ibid. p. 49, Guillelma (nom) ibid. p. 45; 1287 Guillelma (nom) GasReg-A p. 74; 1310/11 Guillelma (nom) ibid. p. 100

Old French

● 1313 Guillaume Paris1313 p. 96

◑ 1313 Guillemete Paris1313 p. 26, Guillemette ibid. p. 106

Middle French

◑ 1366 Guillemete ActsCharlesV no. 341; 1421 Guillemette favier 117; 1455 Guillemette HRAVP-3 p. 353; 1562 Guillemette RegPCC-1 p. 13; 1563 Guillemette ibid. p. 21, Guillemine ibid. p. 23; 1564 Guillemette ibid. p. 50, Guillemine ibid. p. 48; 1565 Guillemette ibid. p. 121, Guillemine ibid. p. 130; 1566 Guillemette ibid. p. 200, Guillemine ibid. p. 206; 1567 Guillemette ibid. p. 279, Guillemine ibid. p. 293; 1568 Guillemette ibid. p. 368, Guillemine ibid. p. 371; 1570 Guillemette ibid. p. 422; 1571 Guillemette ibid. p. 457, Guillemine ibid. p. 443; 1572 Guillemette ibid. p. 488, Guillemine ibid. p. 520

Italy

Latin

● 1265x1339 Guillelma (nom) BBC-Berg 36

Spain

Catalan

● 1250 Guialma RusGeb p. 274

Switzerland

Latin

● 1210 Guilelma (nom) CartChart 4; 1218 Willelma (nom) CartHaut 35; 14thCx1478 Vuillerma (nom) Ob-SPVn (5), Vuillierma (nom) ibid. (71)

◑ 14thCx1478 Guillermeta (nom) Ob-SPVn (63), Guillermete (gen) ibid. (63)