William Carl Heiden's wife was born as Mary Rambow. Her mother, Wilhelmina Rambow's (left) maiden name was Milhan. The earliest person in this branch that we have found so far is Johann Milhan who was born in 1823 in Gross  Wokern, Mecklenburg-Schwerin, Germany

Projecting the ancestors chart out to a child born in 2010 would account for eight generations and would make Johann that person's eighth great grandfather.