Walsh family

Hello!
I posted about my GG Grandparents from Crossmolina on that board, looking for my GGG grandparents, but am stuck with a brick wall. I hope it's ok that I'm posting a very similar post, but I'm also trying to locate any possible siblings. 

Since Ballybroony is small townland, I'm wondering (hoping) if this family could be related. 

http://www.census.nationalarchives.ie/pages/1901/Mayo/Rathoma/Ballybroo…

Anne Walsh maried Michael Collins 28 Dec 1875 in Ballisakeery Church
Anne was from Ballybroony, born around 1848. 
According to her marriage record, her witnesses were Patrick Walsh and Maria Walsh, assuming they are her parents since she was underage. 

I can't find any records for her parents, and I was told with such common names and without an additional piece of info that would pin down the area more, I've pretty much reached the limit in regards to Irish records. I was hoping to verify possible siblings and then research those branches of the tree!

Thanks for any advice.