I found out after my dad died through a DNA test that he wasn't my father and the grandparents and family I grew up with my whole life aren't my family at all. My real father was born in Italy and immigrated to the US. My "father" I knew was also Italian. My mother had an affair when she was 22 with my real father and he was in his 50's. So I have 3 1/2 siblings in their 80's now and I just turned 50. My real father was born in the 1920's.