William Power and Johanna Kilhane/Culhane

Hello. I am seeking information on William Power (Ardagh) and Johanna Kilhane/Culhane (Clounleharde). The were married 12 Jan 1845.  The witnesses were Michael Power and Thomas Connors.

Johanna's parents were Thomas Kilhane and Margaret Sullivan according to her second marriage here in Renfrew County, Ontario, Canada. 

Their son Michael Power was born 26 Aug 1846. His sponsors were Michael Power and Margaret Sullivan.  They were living in Ballyvohoun which is presumably Ballyvoughan.

They had another son, Daniel who was born on 22 Feb 1849. His sponsors were Daniel Culhane and Helen Enright of "Ballyvouhan." ( These two sponsors were also witnesses at Johanna's second marriage in Canada.)

Here's hoping someone has a family connection out there somewhere.

Thanks for your time.