Dictionary of Medieval Names
from European Sources

Giolla Íosa m. Old Irish gilla 'servant, boy' + Íosa, the Irish form of Jesus.

Ireland
Latin
fin12thC Gillaisa (nom) MunDocIr III, p. 16; 1492 Gelasium (acc) RegOct 15
Cite as: S.L. Uckelman. "Giolla Íosa". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2017, no. 1. http://dmnes.org/2017/1/name/Giolla Íosa.