┌─August Marcks
┌─William E. Marcks
│ └─Louisa Dorothea Granzie
┌─William August Marcks
│ └─Kate Stoltenberg
Raymond G. Marcks
│ ┌─Edward P. Jahnke
└─Ruth Marion Jahnke
│ ┌─Andrew Hedberg
└─Caroline Mary Carrie Lena Hedberg
└─Anna