Cowardly name change for this. I'll sum up the backstory as briefly as possible whilst being transparent.
DP was with the mother of his first child for a long time, after many years together she was meeting up with another man from her past and bringing him back to their home whilst DP was at work. DP found out and forgave her for the sake of keeping the family together but the relationship never truly recovered.
A year or two after all of that i met DP, he changed jobs and joined my place of work. Over a period of months an emotional affair began. He told me he was developing feelings for me and was no longer in love with her so he left her and we began a relationship.
We moved in together and have gone on to have two children of our own. Many years later we are still together.
DP is still hugely involved in his DC1's life both financially and physically present.
The ex was close to his family and remains so, with most of them having very little to do with DP now and turning their backs on him.
However, his family have also refused to acknowledge our two children (short of giving me abuse on the internet) and have never wanted to meet them. My DC have never received a Christmas or birthday card and have been completely shunned.
They have grandparents, uncles and cousins they know nothing about.
Short of calling me a home wrecker etc which I can take on the chin, what do you think about the way my DC are being treat?
Should they be punished for their fathers actions?