The first thing we know for sure about Michael is that he joined an emigration scheme in 1763. A man with the improbable name of Count von Stumpel, who had served with the British Army in driving the Acadians from their homeland in Nova Scotia, was given land there. He found about 400 Germans willing to pay a subscription to settle his land and defend it from the natives, and Michael was one of them.
Presumably, they sailed down the Rhine River to Amsterdam past the many beautiful castles on their way to the ocean and the ships that were supposed to take them to the New World.
You can read more about Michael Eisan (nee Greissen-Frein) in my book The Loyalist, available at https://www.amazon.com/Loyalist-Edeana-Malcolm/dp/0987974785 as well as on order at bookstores. Or come to my book launch at First Metropolitan United Church, 932 Balmoral, Victoria, BC at 7pm on September 12 to get an autographed copy..