Dictionary of Medieval Names
from European Sources
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Justus m. Latin justus 'just, fair'.

The byname of a Biblical character who was later venerated as a saint, a 2nd C pope and saint, a semi-legendary 3rd C saint, two 4th C martyrs, a 4th C French saint, and a 6th C Spanish saint. Wycliffite Bible (1395): Just.

This name is sometimes conflated with Josse, via spellings such as Jost.

Belgium
Middle Dutch
● 1336 Justase (dat) RSG1336-39 p. 36
Dutch
● 1597x1598 Justus BoonenGes p. 334
France
Latin
● 814 Justus (nom) StVdM-II H1; 1301 Justus (nom) MemPic-vol17 p. 216
Old French
● 1292 Juste 1292paris p. 2; 1301 Justes (nom) MemPic-vol17 p. 236
Italy
Latin
● 14thC Justus (nom) DSS3-1 p. 13; 1376 Iusto (abl) DouGen1 p. 161; 1521 Iusti (gen) VitAs2 VI
Italian
● 1429–1430 Giusto DiaryLMA p. 210
Cite as: J. Uckelman, S.L. Uckelman. "Justus". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2023, no. 1. http://dmnes.org/2023/1/name/Justus.