A compound of Guy and Geoffrey.
This compound, unusual for appearing so early, appears to have been used uniquely by William VIII, Duke of Aquitaine, who was born Guy-Geoffrey.
- ● 1067 Guido Gaufridus (nom) CartNDSaintes XI
Cite as: S.L. Uckelman. "Guy-Geoffrey". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2017, no. 1. http://dmnes.org/2017/1/name/Guy-Geoffrey.