Proud2BMcNamara on Family Tree Circles

I'm trying to trace my paternal side of the family, McNamara. I have Florence (male) McNamara born 1811, Crossmolina, Co Mayo married to Catherine Geroghty circa 1817 and possibly Wicklow or Crossmolina, Ireland. If you can help me take my lineage back further please let me know. Thanks in anticipation.