Where Did The Surname Mcgivern Originate From And What Is Our Family Crest?

Hi,

I study Genealogy and the Heraldic arts.  McGivern is Scottish in origin, specifically Lanarkshire, Scottland.

There are two elements to a coat of arms, the first being the sheild (crest) and the second being mantling or elements that surround the shield to create the complete coat of arms.