Hi, just wanted to add some food for thought. My father never knew his family, so I did my mom's DNA and mine (since dad's is unavailable now). Using the Gedmatch.com website, I select my dna and my mother's to compare to "many others". I do about 5 at a time and use 3d chromosome comparison. If another person shares chromosomes with only me and NOT my mother: I have found relatives on my FATHER's side. It is a lot of work but I've got pretty proficient with it.
Just an idea for finding family members if you have 2 "known" samples.
Best of luck,
Jan