Thanks everyone.
I just tried to find common dna ancestors and nothing was coming up even though I do have real matches - anyway eventually it did and most were with only 1 segment but not linked to anyone.
Now is that because son's dna tree is private? So if I make it public it might work and give some links? It's also complicated because he hasn't got an ancestry sub but I have and manage his dna.
I have made his tree very basic just names and some years of births and deaths but no place names.
I find this dna very confusing.
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