Hogan Purcell marriage

My great great grandparent emigrated to Canada in the late 1830's or early 1840's.

Their names Patrick Hogan and Bridget Purcell.

Their first child was born in Ontario, Canada in 1845.

Bridget was born Jan. 1817. Her parents were Patrick Purcell and Mary Corrigan or Corcoran.

Her parish was Moycarkey. Her address was Ballymurreen, Tipperary.

I have searched Tipperary and was told there was no marriage for a Patrick Hogan.

There was a William Hogan from Mitchelstown that came with the Peter Robinson expedition in 1825 and settled in the same area as Pat and Bridget but I cannot connect them.

I am looking for the marriage of Pat and Bridget. I don't have the parents of Pat. Their first son's name was James.

Any help would be greatly appreciated.

Joanne