Looking for any information on my GG Grandfather John Grennan est birth 1858 in Roscommon
John's marriage certificate has Bryan Grennan as his father. I have been able to find information on Bryan and it looks like he may have been John's brother. Due to this information on Roots Ireland
'John & Michael Grennan was Bryan's brothers (see John Grennan of Tully just southwest of Bellanagare)
information seems available for Bryan 'Parish records for Frenchpark / Ballinagare show that her father, Brian Ó Grianáin (aka Bernard Grennan) of Bellanagare was a dealer in 1865 and a labourer in 1872'
However I can't find any information re John or Michael and if Bryan was indeed a Brother and not his father who were John's parents . So any information about this Grennan family would be so appreciated as I am hitting a brick wall and I would like to come to visit Roscommon and know it was where my GG started out . Thank you