Hi Charaz, just wondering if you have used your DH's last name for your son? If so, your IL's should be proud that you even have a son to carry on the family name at all! Shane and I are not married but as it is my fathers belief that the children take the fathers last name no matter what, our son's have taken their fathers surname. What we did was use the middle name to honour my family. As everyone has said it is your decision for your baby's name, this is not the 1800's when it was expected to name your first born son after the father or fathers family. Nor are you member of a Royal Family where there are expectations for the name of your children. If you have filled out the forms, I say tear them up,and then go and fill in a new one with the name of your choice. Point out to your rotton IL's that your son is already named after your FIL just by him taking their surname and they should be happy with that!