"Peg o' My Heart" is a popular song written by Alfred Bryan (words) and Fred Fisher (music). It was published on March 15, 1913 and it featured in the 1913 musical Ziegfeld Follies. The song was first performed publicly by Irving Kaufman in 1912 at The College Inn in New York City after he had stumbled across a draft of sheet music on a shelf at the Leo Feist offices.