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Dictionary of Medieval Names
from European Sources

Chapman m. Old English ċēapmann 'dealer', from Old English ċēap 'trade; bargain' + Old English mann 'man'.

Ireland
Latin
fin12thC Ceappmann (nom) MunDocIr III, p. 18
Cite as: S.L. Uckelman. "Chapman". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2020, no. 1. http://dmnes.org/2020/1/name/Chapman.