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Dictionary of Medieval Names
from European Sources

Hyacinthe f. Greek ὑάκινθος, the name of a flower and a precious gem of blue color, probably sapphire.

Italy
Latin
999 Iaquinta (unc) skinner p. 113
Cite as: J. Uckelman, S.L. Uckelman. "Hyacinthe". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2021, no. 1. http://dmnes.org/2021/1/name/Hyacinthe.