Michael Jennings

seeking information on this person from Galway  he married Ellen Burke and they had a son Francis Jennings   born in 1855  who was my grandfather He migrated to new Zealand in 1875   In Griffiths valuation I have seen a Michael Jennings in Killannin   Also in Moyrus  but dont know if  this is him in either place 

I cant find a marriage record or a grave      Francis probably had siblings  I did find a baptism record for Michael in St michaels Creagh  Ballinasloe  as well as a baptism record at same place for Ellen Burke  i have done a DNa test through Ancestry  but no Jennings has shown up yet !!  Thanks Helen