Dictionary of Medieval Names
from European Sources

Mancinagross m. Italian mancina 'left-handed person' + Latin grossus 'great, large; thick; coarse'.

Italy
Latin
1387 Mancinagrossi (gen) Venditti II-80, Mancinagrossus (nom) ibid. II-75
Cite as: S.L. Uckelman. "Mancinagross". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2019, no. 1. http://dmnes.org/2019/1/name/Mancinagross.