Lacus and Rene: They lived in Europe and Rene walked in to see his parents were murdered. He ran away and met Lacus and they started living tgether. Lacus claimed him as his full brother and Rene only would agree to calling him half brother. One day, they were shot by unknown men and some passing vampires changed them. Crowley had blue eyes and was a crusader in the 13th century and Ferid is the one who introduced him to vampires and there's a longer bac story with that.