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Dictionary of Medieval Names
from European Sources
☙

Isaac m. Hebrew יִצְחָק '[he] will laugh'.

The name of a Biblical patriarch. Wycliffite Bible (1395): Isaac.

England
Latin
● 1279–80 Isak (nom) WaHR-SK p. 36
Finland
Early Modern Swedish
● 1582 Isack (nom) Audén1980 p. 171
France
Latin
● 1378 Ysaco (dat) hanquetvol1 1169
Ireland
Latin
● fin12thC Isaac (nom) MunDocIr III, p. 17
Italy
Latin
● 1527 Jsach (nom) Rome1527 p. 87
◑ 1285 Ysacutii (gen) Perugia1285 p. 154
Scotland
Latin
● 1238 Ysaaco (abl) CartLevenax p. 13
Switzerland
Latin
● 1188 Ysaac (nom) CartHaut 28
Cite as: R. Le Get, S.L. Uckelman. "Isaac". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2015, no. 3. http://dmnes.org/2015/3/name/Isaac.