Movies of John Cossar and William V. Mong together
John Cossar and William V. Mong have starred in 1 movie together. Their first film was The Prince of Graustark in 1916..
1916
The Prince of Graustark
The Prince of Graustark
John Cossar
Starred as Baron Douglas
William V. Mong
Starred as Aide to Count Quinnox
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