I have discovered after my mothers death that she had twins in 1972 apparently died and my family knew about them . there was a photo at one time. I have a sister and brother still living born in 1961 and 1962. but the twins were given the same names as the living ones. I have found birth certs for both twins but no death certs. is there any way of finding out if they lived or died. my mother was very secretive and iv already found a sister that was adopted at birth.