The Way of the Strong(1919)

In an Alaskan mining camp, James Leyburn runs off with his gold prospecting partner Alexander Hendrie's wife Audrie and son Frank. Caught in a blizzard, James deserts them in order to save his own life. Audrie dies, and the little boy is taken to live with his mother's half sister Monica Norton. A few years later both James and Alexander are wealthy men. Alexander meets and falls in love with Monica, neither aware of the other's identity.