Does anybody have the WARBURTON and/or O'BRIEN surnames in their family?

My great-grandparents:

John Patrick O'BRIEN & Margaret WARBURTON

They had one child, my grandfather:

John Martin O'BRIEN, who was born in Danbury Connecticut on February 14, 1909.

Margaret WARBURTON O'BRIEN died when my grandfather was just a child.

John Patrick O'BRIEN remarried a Ms. MCGILLICUDDY (first name may be Mary or Mae; am not sure about this)

I know this is not much, but it's all I have. Is there a connection out there somewhere? Thanks!