I will check BMD index

I cannot find any trace of either John Connell or Sarah Connell (nee Hoey) on the 1901 Census

This might be just a strange coincidence. Hoeys are scarce in Dublin. However, on the 1911 census
Sarah Connell (nee Hoey), aged 26, is living at Desmond Avenue...Dun Laoghaire and
Sarah Hoey, aged 26, is recorded as a servant @ Clarinda Park East...Dun Laoghaire
both addresses within half a mile of each other. Might this be the same person?
could she have worked as a domestic servant and not mentioned her marriage & children etc to get work?
It's possible Sarah was 5 yrs younger than stated on Census. We understood she was 64 when she died yet given she is suppose to be 26 in 1911 her age at DOD should have been 69.
Any help on tracing back furher aprreciated.