Doonesbury character “Rev. Sloan” was modeled after William Sloane Coffin – a former Yale University chaplain. William Sloan Coffin passed away yesterday. The relevant text from the AP story from the NY Times is below.
William Sloane Coffin was immortalized in the ”Doonesbury” comic strip when its creator, fellow Yale graduate Garry Trudeau, blended his character with that of a Trudeau roommate, who became a priest, dubbing the fictitious character ”Rev. Sloan.”