I have a Catherine Breen married to Daniel/Thomas Todd. They lived in Tipperary Ireland. Parents of Margaret Todd who married Patrick Dwyer (b. 5 August, 1843 in Gort, North Tipperary, Ireland).
There is also a Thomas Todd mentioned as sponsor to baptism of one of Patrick & Margaret's children but I do not know if he is a father, a brother or an uncle. All I know is there are members of the family in Australia, Canada, New Zealand, England etc.