Dictionary of Medieval Names
from European Sources

Sulhoiarn m. Old Breton sul 'sun' + Old Breton (ho)iarn 'iron'.

France
Latin
834 Sulhoiarn (nom) CartRed IV
Cite as: S.L. Uckelman. "Sulhoiarn". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2016, no. 4. http://dmnes.org/2016/4/name/Sulhoiarn.