I doubt there is any relationship to my line. My great-grandfather was Thomas Davidson born March 13, 1828 in the town (village) of Maghareagh, County Antrim (Northern Ireland today). He spent his youth and early manhood in Scotland, emigrated to the US ad lived for several years in the states of New York and New Jersey (according to his obituary). In 1854 he married Catherine Walker. He died March 20, 1908 in the town of Albany, Pepin County, Wisconsin.