Hello,
There might possibly be a connection.
In researching a Donohue forbear, I discovered that my great great grandmother Bridget Donohue, born c. 1820 had a number of siblings, one of whom was called Kitty/Catherine. A Kitty Donohue married a Martin Leech in 1839 in Ardrahan parish. In subsequent land records there was a Martin Leech in Cahermore. It is possible that this is your family, going back a generation beyond your research?
For info, my Bridget Donohue married Patrick Mannion in Ardrahan in 1849. They are associated with a number of neighbouring parishes such as Kilthomas, Kilbeacanty, Kilmacduagh etc.. possibly because they were herds (shepherds). They ended up living in Crusheen, County Clare.
Regards,
Deirdre Carroll, Dublin, Ireland.