Previous post which disapeared

My Grandparent"s names are Henry Mackey & Margaret Murnane.  My Father Michael was baptized in Fedamore in 1883.  His brother James was baptized in Fedamore in1881.  My Father came to the USA under his Mother's maiden name (Murnane  in 1900.  On the ship manifest it listed that he was a tailor and left from Glen.

     In a previos post by a Clancy, there was mentioned that there was a Clancy & Murnane marriage in 1800 or there abouts. 

I wonder if these two Murnanes were related?

Thank you,

Bosun