On the census for 1 June 1880, San Francisco:
Timothy Kaelley [Obviously the wrong spelling] aged 50
Sarah wife Aged 43
Mary Ellen 16
Chas H 10
Timothy J 5
Does this seem like the family you are looking for?
Do you recognize any of the children's names? (I think they are on at least one other census.)
If this is not the correct family, could you give an approximate date of birth for Timothy? Have you already traced them on any census?