Dictionary of Medieval Names
from European Sources

Siclebert m. An elongation of Old High German sigu 'victory' + Old High German beraht, Old Saxon berht 'bright' from Proto-Germanic *berhtaz.

France
Latin
c823 Siclebertus (nom) irminon-vol2 14, CE
Cite as: S.L. Uckelman. "Siclebert". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2017, no. 1. http://dmnes.org/2017/1/name/Siclebert.