Partner objects to grandchildren being around so much

Surely he knew when you got together that you had AC and at least one grandchil, with the real possibility of this number increasing.

I assume from your post that he is childless and has no siblings with children and grandchildren.

It seems to be that currently you are like boxers either side of the ring, each taking opposite views: he finds your grandchildren too much and thinks they come before him and you say I am very family orientated and surely shouldn’t have to choose

Have you considered sitting down together and discussing the issue in a non confrontational way. This means both of you giving a bit and reaching a mutally agreeable arrangement.

what a mardy b*gger!

You are a mother and grandmother and your entire world cannot revolve around a man. I would have thought he was of an age to appreciate a bit of alone time anyway?

He is behaving like a teenager. Is there something underlying this clingy behaviour?

He is the one who has to choose, not you.

You come as a package with your own family, kids and grandkids.

He can make an effort to get along with them - or make himself absent as he has been doing. That's his choice!