Douglas Harper's Etymology Dictionary
also Petronella, fem. proper name, a feminine diminutive of Latin Petronius. Also "the name of a saint much-invoked against fevers and regarded as a daughter of St. Peter. The name was accordingly regarded to be a derivative of Peter and became one of the most popular of girls' names, the vernacular Parnell being still used as a proper name as late as the 18th century in Cornwall" [Reaney].\n
Usage examples of "petronilla".
It would have been a desperate week for Petronilla alone with her mother.
Lady Petronilla gritted in reply, her bitterness perhaps stemming from thoughts of her own marriage, an alliance of lucre, not love.
Cadfael caught sight of a number of known faces craning among the crowd: Edric Flesher’s wife Petronilla, Aline Beringar’s maid Constance leaning over the bridge, one of the abbey stewards forgetting his duties to stare.
Cadfael caught sight of a number of known faces craning among the crowd: Edric Flesher's wife Petronilla, Aline Beringar's maid Constance leaning over the bridge, one of the abbey stewards forgetting his duties to stare.