Liam

Liam is a member of the Irish Coven. He has a mate named Siobhan, and is covenmates with Maggie.

Description
He is described as hard-faced and physically imposing. Liam is not a vegetarian and also does not have any special gifts. He was present when his coven helped defend Renesmee Cullen from the Volturi. He never expresses a dialect with any of the characters in Breaking Dawn. And he is only present in this book. He hasn't got any ability, except the basic vampire ones.

A dimunitive of the Germanic name Willahelm, which was composed of the elements wil "will, desire" and helm "helmet, protection".

Siobhan
Liam is Siobhan's mate, although they are never mentioned talking in Breaking Dawn. The only thing that is mentioned is that Liam is constantly behind Siobhan and that he follows every order that his mate makes.

Maggie
They are only covenmates and as Siobhan and him, they are never mentioned talking during the book.