|Robert Morley (1908 - 1992)|
|Marie Antoinette (1938) [King Louis XVI]: Executed (off-screen) by the guillotine; we only see Norma Shearer's reaction as she hears the drumroll and the cheering of the crowd from her cell.
The African Queen (1951) [Rev. Samuel Sayer]: Dies of natural causes (off-screen) after becoming delirious in the burned village; his body is shown afterwards when Humphrey Bogart discovers him, with Katharine Hepburn by Robert's side.
The Old Dark House (1963) [Roderick Femm]: Killed by Janette Scott (though I don't know the details).
Theatre of Blood (Much Ado About Murder) (1973) [Meredith Merridew]: Choked to death when Vincent Price uses a funnel to force a meat-pie (made from Robert's poodles) down Robert's throat. (Thanks to ND)
The Wind (Edge of Terror) (1987) [Elias Appleby]: My memory of this movie is vague, but I believe he was thrown over a cliff or out of a window by Wings Hauser.