Dictionary of Medieval Names
from European Sources

Grosso m. Latin grossus 'great, large; thick; coarse'.

France
Latin
1101x1129 Grossini (gen) CartStPC XXII
Switzerland
Latin
14thCx1478 Grosso (nom) Ob-SPVn (129)
Cite as: S.L. Uckelman. "Grosso". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2016, no. 4. http://dmnes.org/2016/4/name/Grosso.