Servis/McKian Family Genealogy

I am researching the surname Servis. The earliest Servis that we have located is Frederick Servis. He married an Elsje Janson. We don't know where, for sure, they came from but do know that their child Aaron Servis was born in 1783 in New York. Part of the family at some point moved to Michigan.I am also researching the surname McKian. The earliest McKian that has been located was Patrick McKian and he married Catherine Brady. He died in 1907 in Ontario, Canada. Part of this family also came to Michigan.