Hello, new here but thought I'd start with this.
Using Ancestry.co.uk, also done the dna test. For a long time being trying to find out who my great grandfather was on my maternal side, The family always knew that granddad was born out of wedlock, but we had a clue that he always said his biological father died in 1918 in a mining disaster.
My Auntie whose in her 80's thought the name would come to her, anyway brought a book listing the names of all those killed. And she recognised one.
Still with me I put this in my family tree, traced him back a couple of generations both maternal and paternal. I'm getting DNA matches on his maternal, but nothing on the paternal side. Could this be I'm barking up the wrong tree or maybe the great grandads mother had a bit on the side ?