I was adopted when I was 15 months old, I have always known my biological Mother. At the age of eight, my friends Father told me he was my Dad, But my mother has totally denied this. The man treated me very good. Some years ago he passed away still saying I was his child, I was put into his obituary along with my children as his grandchildren. The man I am married to now turned out to be this mans relative, if he was my Father we would be cousins. Would a DNA test between us children tell me the truth?