The name liam is of irish origin and is derived from the name uilliam, which is the irish equivalent of william. It means resolute protector or strong-willed warrior. liam is a popular name in english … Liam liam is a short form of the germanic name william, or its irish variant uilliam.

In this video, you'll learn the meaning of liam, the origin of liam as a baby name as well as common nicknames for liam.