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

Natalisma f. Latin natalis 'natal, of birth' + Latin -is(s)(i)ma, a superlative suffix.

France
Latin
c823 Natalisma (nom) irminon-vol2 34, Wan
Cite as: S.L. Uckelman. "Natalisma". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2018, no. 1. http://dmnes.org/2018/1/name/Natalisma.