Susie Barnum died in 1955, the same year as her cousin Clyde Magaw Barnum (1891-1955). As a result, Ludwig Neumann, Susie's widower, married Hazel Holben (1897-1972), Clyde's widow.
Susie's father and Clyde's father were the brothers Frank Leslie Barnum (1859-1939) and Edgar Miller Barnum (1857-1918), sons of Urban Butler Barnum (1831-1908). Those two brothers married sisters Martha Magaw (1867-1943) and Sarah Magaw (1863-1913).