Holland Family search.

Hi, I'm looking for relatives of the family name Holland. I've been told we could be associated with the Ó hUallacháin Clan, that includes the Holland, Houlihan and O’Houlihan. I've attached a rough family tree from my Dad's side. It shows that my Great Great Great Grandfater, Michael J. Holland was born in April, 1828, County Cork, Ireland and married Jane Conners, born 1829 in Ireland. Although the Birtle name comes from England, those that have has DNA tests indicate even they may have come from Ireland origionaly. I think they were all Catholic.  My father, George J. Holland, recently passed. My mother's maiden name was O'Laughlin.

Thank you,

George R. Holland