Parents' birthweight affect children's birthweight?

Mrs.A

My husband was a big baby (almost 11lbs) so everybody is saying we're having a big baby.

I was 7lbs when I was born, my ex husband was also only 7lbs when he was born and our babies were 9lbs 6oz, 10lbs 12oz and 8lbs 13oz. If this is true, I'm now officially petrified to give birth. I never had gestational diabetes (low sugar in fact) and watch what I eat and exercise.

Is this coincidence or does a parents birth weight affect their offspring's birth weight?