This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
俍 combines the person radical 亻 with 良, but the historical origin and original meaning are uncertain.
A person 亻 beside 良 (good) might suggest a good person, but the actual meaning is unclear, so treat this as a placeholder.
For リョウ, imagine a person 亻 with a good 良 reputation named Ryo: Ryo -> リョウ.