Gertrud Hackmann is my 13th great grandmother:
https://www.geni.com/people/Gertrud-Hackmann/6000000003901809061?through=6000000003901769682
Her father Hans Luneborg = Lueneburg:
https://www.geni.com/people/Hans-Luneborg-Lueneburg/6000000003901769682
is then my 14th great grandfather. But Geni does not find the relation and reports a very complicated relation through by wife.
I assume this is because it is reported from another tree and some merging is needed. I am not experienced in using Geni. Can someone tell be how such a merging is done.
Thank you, greetings, Knut Schroder