Re: New here, Dead fiancees parents are trying to take my son
This is selfish thinking on their part. Like you they are mourning the loss of their daughter, like you they want to stay connected some how and the grand child is certainly a connection. I would guess they think since you are not related to them by marriage as your life moves forward and you possibly marry and have more children they will be left out of your childs life, and that hurts them deeply. Consider the pain of them losing their child and the pain of possibly losing their grand child and it's easy to see why they are desperate.
There also is certainly the chance you haven't proved yourself to be a capable parent and they are truly concerned for the welfare of the child.
What is the reason they have given for wanting to take the child?
I truly am sorry for your loss, it's a terrible tragedy for all involved.