It's a girl name.
Priscilla is the same in English and Italian. The feminine proper noun traces its origins back to a feminine diminutive for the Latin word priscus ("very ancient"). The pronunciation will be "pree-SHEEL-la" in Italian.
Priscilla is Selena's cousin through her biological father's side. Her mother is of Italian descent so clearly Priscilla would be from the Mexican side of the family and considering her last name is 'Deleon' it stands to reason that her father's sister is how Priscilla happens to be Selena's cousin.
The possessive word for Priscilla is "Priscilla's."
Priscilla Isaacs is the maiden name of Priscilla Presley.
Priscilla Ryan's birth name is Priscilla Blomfield.
Priscilla Lane's birth name is Priscilla Mullican.
Priscilla Lawson's birth name is Priscilla Shortridge.
Priscilla Presley
Priscilla Be was born in 1957.
Priscilla Presley's birth name is Priscilla Ann Wagner.
Unique Priscilla's birth name is Unique Priscilla Mauretha.
Priscilla Obledo's birth name is Priscilla Ann Rodriguez.