I am hoping to solve a family mystery through genetic testing. my ex husbands father used several aliases and supposedly jumped ship after WWII coming out to Australia from England and then fleeing to New Zealand, we know very little about his origins. My daughter and I are quite interested in trying to find out more about that line of the family. We can get a sample from my ex husband, myself, my daughter and her son, my sons and other daughters, my ex husbands sister and children and possibly my ex husbands brother. I'd like to know what would be the best samples to start with?