List of 9 ancestors found in 40 iterations (9 distinct persons and 9 positions into tree)

Generation 0 - 1 person(s) on 1 (1 distinct persons)
Generation 1 - 2 person(s) on 2 (2 distinct persons)
Generation 2 - 4 person(s) on 4 (4 distinct persons)
4Friedrich von Preussen (25/09/1744-16/12/1797)
5Friederike von Hessen Darmstadt (16/10/1751-25/02/1805)
6Karl von Mecklenburg Strelitz (11/10/1741-06/10/1816)
7Friederike von Hessen Darmstadt (20/08/1752-22/05/1782)
Generation 3 - 2 person(s) on 8 (2 distinct persons)