Family tree Steverink
The family tree Dortmans is given in various pages, from generation 1 to generation M with N=2k-1 persons in generation k (N=1,2,4,8,16 etc.). If available images are provided.
The number for each individual corresponds to its father and mother by a factor of 2, so e.g. nr. 128 has father nr 256 and mother nr 257 etc.
The table below gives the number of persons Ni identified per generation:
From the birth and death data some basic statistics have been assembled: