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Dictionary of Medieval Names
from European Sources

Callistus m. Greek Κάλλιστος 'most beautiful'.

The name of three popes, one anti-pope, and a patriarch of Constantinople.

France
Latin
1119 Calixti (gen) CartNDSaintes VI, Calixtus (nom) ibid. VI; 1121 Calixti (gen) clairvaux-12thc 1
Italy
Latin
1527 Callistus (nom) Rome1527 p. 84
Scotland
Latin
1122 Calixtus (nom) ESC XLIII
Cite as: S.L. Uckelman. "Callistus". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2015, no. 3. http://dmnes.org/2015/3/name/Callistus.