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.

Learn about the baby name liam! 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.