Thank you very much for your help. I thought and I want to make little steps at first, so I changed my struct:

// person.h struct person { int id; QStandardItem* name; QStandardItem* family; }

Now I can directly use my members and append them.
I do not need write access, but to show my objects directly in QAbstractTableModel is indeed a sexy idea. I am trying around with QModelIndex, club_model->item(), club_model->itemData() and roles, and when I am done with that, maybe I'll try my own model.

For now, my question is solved!

Regards Gerhard