RhymeZone: royall definitions

Definitions of Royall:

name: A surname (common: 1 in 100000 families; popularity rank in the U.S.: #17583)

noun: A surname.
adjective: Obsolete form of royal. [Of or relating to a monarch or their family.]
noun: Obsolete form of royal. [(somewhat informal, often capitalised) A royal person; a member of a royal family.]

(Definitions from Wiktionary)