Movies (Acting Roles)
Sorted by Release DateAn Old Fashioned Christmas
Robert O'Mahoney was
? in An Old Fashioned Christmas
as 'Earl Of Shannon'.
Sat, Dec 11 2010
TV Shows (Acting Roles)
Sorted by Release DateAges in TV shows are based off the first air date and may not be accurate. View individual episode details for accurate ages
Dominion Creek
Robert O'Mahoney was
? in Dominion Creek
as 'Jacob Hopkins'.
First Air Date
Tue, Sep 08 2015
Tue, Sep 08 2015
Ripper Street
Robert O'Mahoney was
? in Ripper Street
as 'Walter de Souza'.
First Air Date
Sun, Dec 30 2012
Sun, Dec 30 2012