|Pursued (1947) [Prentice McComber]: Shot to death in a shoot-out with Robert Mitchum.
Red River (1948) [Dan Latimer]: Trampled to death in a cattle stampede.
3 Godfathers (1948) [William Kearney a.k.a. The Abilene Kid]: Dies of thirst and exhaustion (compounded by his previous gunshot wound) in the desert, while John Wayne and Pedro Armendariz attempt to make him more comfortable. (Thanks to Brian)
Silver Lode (1954) [Johnson]: Shot to death by Dan Duryea. (Thanks to Gordon)
The Searchers (1956) [Brad Jorgensen]: Shot to death (off-camera) by Comanches, after he rides into their camp for vengeance; we only hear the shots as Jeffrey Hunter and John Wayne look on. (Thanks to Gordon)
The Rifleman: The Journey Back (1961) [Lieutenant Vaughn]: Mortally wounded (off-screen) in a shooting; he dies shortly afterwards while talking to Chuck Connors. (Thanks to Gordon)
Rawhide: The Deserter's Patrol (1962) [Walsh]: Killed, along with most of the rest of his patrol, in a battle with Native American warriors. (Thanks to Gordon)
Bandolero! (1968) [Cort Hayjack]: Shot to death in a shoot-out with Mexican bandits as Harry is firing from a window. (Thanks to Brian)
Big Jake (1971) [Pop Dawson]: Shot to death by Patrick Wayne as Harry comes out of a building during a big shoot-out. (Thanks to Brian)