My g-g-grandmother Ann (b. about 1825) married John Hammill in Schaghticoke, NY in 1851 then they purchased land and moved to MN. The priest wrote the marriage in the family Bible as "Ann Burns - Roscommon". However it almost looks like Beirns not Burns, and her daughter-in-law wrote it as Byrnes - so I really don't know the correct spelling. Due to her common name, we haven't been able to find an immigration record that we can be sure is hers. We don't know if she came with any other family members. The only tiny clue we have are the names of the children (in birth order): Mary M, Rose Anne, John Timothy and Alice Theresa. Searching through rootsireland parish records, the name Rose is common among the Hamills (of Louth) but not among any variation of Burns. Likewise the name Timothy can't be found in the Hammills but appears often in the Beirns of Roscommon. My theory, based on typical naming conventions, is Ann's parents were Mary and Timothy. Of course, I have not found a record of an Ann born to a Mary and Timothy in the right time period.
My 3rd cousin and I have resorted to DNA testing but unfortunately we have very few matches in common. If you have any connection to any variation of Burns/Beirns/Byrnes in Roscommon and have done DNA testing please check our kits against yours:
My mom, Mary: A857609, on AncestryDNA as "MW managed by AngelaH"
myself: A247926 "AngelaH"
Uncle Rich: T028937
Uncle Jim: T070558
Aunt Alice: M812135, Alice is also on AncestryDNA as AAVautrain
3rd cousin Mike: A017221, on AncestryDNA as "MH managed by AngelaH"
3rd cousin Raymond: A133569, on AncestryDNA as "RF managed by hamcdonough"
3rd cousin Bob: A090917, on AncestryDNA as "Robert Kamp"
3rd cousin John: on AncestryDNA as "JK managed by huskers1978"
Possible Beirne match Lisa: A601508, on AncestryDNA as "LB managed by LKB1906"
Possible Beirne match Lisa's mom, A086582, on AncestryDNA as "AM managed by LKB1906"
I'll also welcome any advice on breaking through this brick wall!