Hi,
Thanks for getting back to me with more information.
Ok. I was referring to team chart. While I understand that this app was not intended to be used as a family tree, here's a suggestion for a new product... Call it family tree or whatever. just copy Team chart and extend it to have 2 parent at top level and multiple children. Each children can link to a new chart or family with 2 parent and multiple children and so on. You already have the main logic in Team chart app, it only needs a slight modification to create a new product. Drop me a note when you have the beta product out. I will gladly test and suggest more features. You should act fast on this before someone else comes up with another Joomla extension doing the same. Good luck! 
Yes, it would be helpful in some cases like yours. We need to check its popularity and technic.
Anyways, we noted that in our Team chart planning area.
Thanks a lot!
Cheers,