great grandparents cadden/ calary

[Berni]

hello
i'm hoping someone may be able to give me some advice
i believe my maternal grandmothers father was born in granard
county longford but could not find any info
on 1901 census for granard longford thomas says born longford
and mary anne born cavan
his wife from their childrens baptisms was mary anne calary
i have found a birth for thomas cadden born 1855
maria anne calary 1864
both in leitrim
i believe they were catholics
i've been working on counties kerry cavan and longford
but, how do i find out where in leitrim thomas and maria were born
any advice pleae
many thanks
berni