Does any one know the origin of McGrath name in Ireland?

Question

I know origin of my fathers name...Monaghan...but would like to know about McGrath...does anyone know it...

happy new year Ireland from here in California

Answer 1

try this

http://www.houseofnames.com/fc.asp?sId=&...

Answer 2

Mc means son of. O' means grandson of. McGrath would be son Grath. This would be someone of great importance at the time.

Answer 3

the most famous mc grath in ireland is paul soccer player and black