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Dictionary of Medieval Names
from European Sources

Johnbon m. A compound of John + Latin bonus 'good, kind, right, pleasant; valid, useful, healthy'.

Italy
Latin
1376 Iohannisboni (gen) DouGen1 p. 22
Cite as: S.L. Uckelman. "Johnbon". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2021, no. 1. http://dmnes.org/2021/1/name/Johnbon.