Timothy Launy ( Lowney ) Castletownbere co. Cork

Hello,

I am searching for the family of Timothy Launy ( Lowney ) , born before 1810. Any information regarding his parents and siblings.

Hemarried Maria Stack on February 18, 1833 in Castletownbere, co Cork.

Is this surname a branch of the O'Sullivan's?

Thank you for your help.

Renee