This book presents detailed evidence, photos, documents and newspaper clippings used as a basis for the novel "Lt. Pat O'Brien," by Kevin McNulty, Sr., (KMC Publishing Company). O'Brien was an American World War I pilot who flew for the RAF before America had an air force. He was shot down behind enemy lines, escaped from German hands by jumping from a moving prison train. He walked seventy-two days through Germany, Luxemburg, and Belgium to the Holland border and freedom. He was welcomed by the King of England in a one hour private audience at Buckingham Palace one week after his escape. O'Brien wrote a bestselling book about his escape and was the most sought after speaker in America in 1918, speaking in nearly every major venue in the United States. His fame led to a silent film role, status as a celebrity among the most famous and he became a rich man. He met an untimely death at age thirty and the nature of his death has been debated for years. He was found dead in the Hamilton Hotel in Los Angeles with a bullet to his head at age thirty. His death was declared a suicide, a fact flatly denied by his closest friends and family members for years. New evidence uncovered for the McNulty book adds serious doubt to the suicide contention. Research by the author and Marcia Tedford revealed previously unknown facts about O'Brien's life, his death and the existence a daughter born to his betrothed. Neither O'Brien nor any member of the O'Brien family knew of the child. This book includes details and previously unknown photographs of Pat's child and his grand children who came forth upon hearing of the historic novel by McNulty. "Finding Pat O'Brien" documents the findings of the author, Mrs. Tedford, family members and various interested parties in United States and England.