Just to be clear.
I hope!
My grandmother and my great uncle were brother and sister.
My grandmother had three children, one of whom was my mother.
My great uncle had one child, let’s call her Mary. She died intestate and without children or siblings.
The estate went to back upwards to her mother and father. Both deceased.
Then to the brothers and sisters of her mother and father.
All deceased.
Then to the children of those brothers and sisters.
Some, including my mother, deceased.
Then to the children. ie the grandchildren of the brothers and sisters of Mary.
That was me, amongst others.
It sounds a bit complicated but basically if someone has died the money keeps going on down.
Can of worms it is. If it’s worth it. The amount can be quite small when it’s divided again and again.
I've got another 'keen'... Ouch!