from Pawtucket, Rhode Island, USA

Jack Duffy was born on September 4, 1882 in Pawtucket, Rhode Island, USA. He was an actor, known for The Stage Hand (1920), Love Takes Flight (1937) and The Adventures of Peg o' the Ring (1916). He died on July 23, 1939 in Hollywood, California, USA.
The Dancing Millionaire
Dancing Academy Customer

Hotel Proprietor
Doctor's Orders
(Unknown)

Self
Boys Will Be Boys
'Grandpa'
The Freshman's Finish
(Unknown)
Are Scotchmen Tight
Sandy MacDuff
A Wireless Lizzie
Grandpa Abner

Uncle Todd
Chicken Feathers
Old Charley Kale

Noah Flood
Nifty Nags
(Unknown)

Nanny's Father

Fire Chief
Hitchin' Up
Grandpa
Mister Wife
His Neighbor

(Unknown)

(Unknown)

O'Hagan
Reckless Romance
Grandpa

An Old Goat
Jungle Pals
(Unknown)

Sam Gardner (uncredited)
The Fast Male
Passenger Late for Train

Grandpa