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Dictionary of Medieval Names
from European Sources

Gemma f. Latin gemma 'gem, precious stone'.

Italy
Latin
954 Gemma skinner p. 113; 1089 Gemma ibid. p. 115; 1348 Giemme (dat) INP 23
Cite as: J. Uckelman, S.L. Uckelman. "Gemma". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2015, no. 2. http://dmnes.org/2015/2/name/Gemma.