Peg o' My Heart

Marion Davies

Margaret 'Peg' O'Connell

Onslow Stevens

Sir Gerald 'Jerry' Markham

J. Farrell MacDonald

Patrick Shamus 'Pat' O'Connell

Juliette Compton

Ethel Chichester

Irene Browne

Mrs. Chichester

Tyrell Davis

Alaric Chichester (as Tyrrell Davis)

Alan Mowbray

Capt. Christopher 'Chris' Brent

Doris Lloyd

Mrs. Grace Brent

Robert Greig

Jarvis (butler)

Nora Cecil

Smythe (maid)

Geoffrey Gill

Terance

Billy Bevan

Detective #2 (uncredited)

Dannie Mac Grant

(uncredited)

Leyland Hodgson

Detective #1 (uncredited)