This page is historical. Follow this link for the current version.
Dictionary of Medieval Names
from European Sources

Venture m. Italian ventura 'fortune'.

This is sometimes used as a pet form of Bonaventure, sometimes as a standalone name.

Italy
Latin
1265x1339 Venture (gen) BBC-Berg 115; 1276 Venturus (nom) ibid. p. XLII; 1280 Venturus (nom) ibid. p. XLIII; 1282 Ventura (nom) ibid. p. XLVII; 1292 Venture (gen) ibid. p. XLIV; 1527 Venturj (gen) Rome1527 p. 90
1285 Venturelle (gen) Perugia1285 p. 156
Cite as: S.L. Uckelman. "Venture". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2015, no. 2. http://dmnes.org/2015/2/name/Venture.