In 1850 Census Clarion Co, Helen Twp
I found John H. Callihan age 27
wife Nancy 25
William age 5
Mary age 3
living next door to John Callihan age 66
Wife Roena age 56
Robert age 16
Next door an other side
George Callihan 36
Rebecca 34
Sarah 11
Harvey 10
Robert 8
Rebecca 6
Elizabeth 4
Andrew 1