Dictionary of Medieval Names
from European Sources

Sismund m. Old Saxon mund, Old High German munt 'hand, protection' + Old High German sisu 'lament, song' +

France
Latin
825 Sismundus (nom) InsMacon V
Cite as: S.L. Uckelman. "Sismund". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2016, no. 4. http://dmnes.org/2016/4/name/Sismund.