Figure 1.-- I don't think his son David is in the film, but there is a great picture of David with his dad in Mountie uniforms.

O'Rourke and his Indian (Cree) half brother Cajou are fur trappers. On the way back from a northern Canadian trapping trip they find a devestated wagon train. The only surivor is Grace. A Mountie commander who hates the Crees concludes it is a Cree attack. The Sioux from across the border in America are trying to involve the Cree into the fight with Whites and in particular the 7th Calvalry. O'Rourke has to disobey orders to save the men. He also is concerned about Grace. The film stars Alan Ladd. I don't think his son David is in the film, but there is a great picture of David with his dad in Mountie uniforms. While not in this film, David Ladd did turn in some notable performances.