Brimmer Blumer Boomer Thomson from Tyholland

I am searching for information for my 3x great grandparents Jeremiah Boomer/Brimmer and Eliza Thomson. Married in Tyholland in between 1835-40. The family moved to Belfast around 1857 and were using the name Boomer. I beleive they used the spelling Brimmer while in Co Monaghan. 

Jeremiah may have been the son of John Brimmer who had a brother James Brimmer and were living in Crowey, Anahaga and Monaghan 

Any information on the Brimmer Blumer Boomer family from this area would be gratefully apprceiated. 

Other names that may have married into the family are : McMahon, McConnell, Scofield.