Dictionary of Medieval Names
from European Sources

Ralphe f. Fem. of Ralph.

While the masculine form Ralph was always quite popular, the feminine form was extremely rare.

England
Early Modern English
1555 Raphe StAnthonlin p. 11
Cite as: S.L. Uckelman. "Ralphe". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2016, no. 4. http://dmnes.org/2016/4/name/Ralphe.