What's her name?
Her name's Shelly.
Who is she?
She's my sister.
Who is he?
He's my dad / my father.
What's ... name?
What's HER name?
Who is he?
He's my cousin.
What's ... name?
What's HIS name?
Who is she?
She's my grandma / grandmother.
Who is ... ?
Who is HE?
What's his name?
His name's Harry Potter.
What's her name?
Her name's Lily.
Who is ... ?
Who is HE?