Question: Which star of "A River Runs Through It" uses a name other than their given first name in the credits?
Sentence (from "A River Runs Through It (film)"): Set in and around Missoula, Montana, the story follows two sons of a Presbyterian minister, one studious and the other rebellious, as they grow up and come of age in the Rocky Mountain region during a span of time from roughly World War I to the early days of the Great Depression, including part of the Prohibition era.
Relevant evidence: No