Born on Jan 6, 1879 to Dorsey C. Mackin and Jeramima Stella Thomas Mcmurray. William A. Mackin, Sr passed away on Mar 21, 1914, at the age of 35 and was buried in Grandview Cemetery in Johnstown, Pennsylvania, United States. William A. Mackin, Sr was married to Jessie Mae Inscho Mackin and had 1 children: William A. Mackin, Jr.