Looking for information on my gggrandparents Malcolm and Mary McKirchy. Information I have places them in Albany in 1847 when my ggrandfather William was born. One other son,John, settled in Michigan. Surname spelled in various ways. May have been other siblings. Supposedly they were orphaned young and raised by different families which led to variant spellings of surname. Both William and John served in the Union Army. Any information would be appreciated.