I have just discovered that James Anton Cassidy and Mattie Lawson had a son that I was unaware of in December 1912 in Butte Montana. They had lived in Colorado where two daughters were born....Gwendolyn in 1902 and Elizabeth in 1904. The parents and the daughters show in the census of Butte in 1910. A search of birth records shows a son born to this couple in December of 1912. He is not given a first name at birth, but the child was baptized in mid January 1913 and christened James A Cassidy. I believe he was taken to Durango Colorado about mid 1914. His mother moved to Teller Co., Colorado in 1915. He is not listed on the 1920 census with his mother. Any help would be appreciated.