In the 1930 US Federal Census for North Vernon, Center, Jennings, Indiana, 33-year old Indiana-born Leo D and his 30-year old Indiana-born wife Mary [McClellan] Clerkin were married when Leo was 20- and Mary was 18-years old. In their household are their Indiana-born childern, 12-year old Margaret, 10-year old Robert, 6-year old Mary J, 4-year old Richard, 2-year 0-month old James D and 9-month old Shirley A. Margaret and Robert have attended school in the past year. Leo, Mary, Margaret and Robert can read and write English. The family is living in a house at 302 8th Street, which they rent for $15 a month. They do not have a radio. Leo is a grocery salesman and has worked on the last regularly scheduled work day. He is a veteran of WWI. Leo's brother John and John's family are living down the block at 324 8th Street.