Dictionary of Medieval Names
from European Sources

Cosmo m. Ancient Greek κόσμος 'order, ordered universe, cosmos'.

The name of a 3rd C martyr, an 8th C saint, an 8th C pope of Alexandria, a 9th C pope of Alexandria and saint, a 10th C pope of Alexandria and saint, a 12th C Italian saint, the birth name of a 15th C pope, and the name of a number of 15th-16th C grand dukes of Tuscany and rulers of Florence.

Finland
Early Modern Swedish
1582 Kuisma Audén1980 p. 171, Kuszma (nom) ibid. p. 171
Italy
Latin
1464 Cosma (nom) CUP-III-I CCXXXI; 1527 Cosmus (nom) Rome1527 p. 84
Italian
1513x1521 Cosmo LeoX p. 13
Spain
Catalan
1510 Cosme valencia1510 3312
Cite as: R. Le Get, S.L. Uckelman. "Cosmo". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2016, no. 4. http://dmnes.org/2016/4/name/Cosmo.