1900FCI John Ardern & family, 2 pages; United States Federal Census > New Jersey > Union > Plainfield Ward 4 > District 129; image 56-57 of 65 @ancestry.com; Source Citation: Year: 1900; Census Place: Plainfield Ward 4, Union, New Jersey; Roll: T623 997; Page: 29A; Enumeration District: 129.
Household Members: Name Age
John Harden 32
Annie Harden 30
Mary Harden 7
Louise Harden 5
Willie Harden 3

1910FCI John Ardern & family; United States Federal Census > New Jersey > Union > Plainfield Ward 1 > District 91; image 12 of 39 @ancestry.com; Source Citation: Year: 1910; Census Place: Plainfield Ward 1, Union, New Jersey; Roll: T624_910; Page: 6B; Enumeration District: 91; Image: 730.
Household Members: Name Age
John Ardern 41
Anna Ardern 40, had 4 children, 3 still living
Mary Ardern 17
Louise Ardern 15
William Ardern 12