Robert Sullivan Mahan was a son of Robert James Mahan and Ellen G Sullivan.
Alice Geneva Hendren was a daughter of George Hendren and Mary Josephine Abbott.

Census 1930: family @ 225 Van Nostrand Av., Jersey Ciry, NJ
Eugene Sullivan, 55, Head, single
Cornelius Sullivan, 85, father, widowed
Ellen G Mahan, 58, sister, widowed
Robert S Mahan, 25, nephew, single

Census 1940: family @ 2 Kingsbury St., Worcester, MA
Robert G Mahan, 35 Head
Alice G Mahan, 33 Wife
Robert G Mahan, 5/12 Son
Ellen G Mahan, 66 Mother
Katherine Henderson, 57 Mother-in-law

Deaths / Burials:
Robert Sullivan Mahan died in Covina on 9 February 1972 and is buried in Forest Lawn Memorial Park Covina, Los Angeles County, California in PLOT Cherished Memory, Map 15, Lot 4217, Space 3
Alice Genevieve Mahan died in Pomona on 5 July 1979 and is buried in Forest Lawn Memorial Park Covina, Los Angeles County in PLOT Cherished Memory, Map 15, Lot 4217, Space 4