Frederick Truman was the sheriff of Twin Peaks, Washington and a founding member of the Citizens Brigade, later renamed the Bookhouse Boys.
During his childhood, Truman's father taught him how to tie a Green Butt Skunk, which he himself would later teach to his own son, Harry.
In the 1940s, Truman, then the sheriff of Twin Peaks, was a founding member of the Citizens Brigade, which was formed to defend the town following the United States' entry into World War II.
Following his retirement, his son, Franklin Truman took his position as sheriff. Frederick's younger son, Deputy Harry S. Truman, then took over when Frank moved away from Twin Peaks.