Mentioning family tree details is essential as many people do remembers elders only that too in present day children any of them do not know their grand parent's names and place.
"Do not give up, things might not favour you always"
It is really a good idea to print the family background as a tree from both sides so that details of the on going marriage can be known to every one. I have not seen such an idea so far. But I have seen the invitation cards mentioning clearly not to bring any items to be given as present to the groom or the bride. I have also seen a Muslim invitation where in it was clearly mentioned that the invitation is for those whose names are mentioned on the card. That was really surprising. In Hyderabad there is a practice that on one invitation many people would grace the occasion and probably to check that this advise.
'Idhuvum Kadandhu Pogum "
Even this challenging situation would ease