Here are some links, with especially relevant sections quoted:*****http://home.btconnect.com/CAIS/Religions/iranian/Zarathushtrian/Oric.Basirov/origin_of_the_iranians.htmFrom the mid fifth century A.D. onwards, Alans, now fully Christianised, gradually lost their Iranian language, and were eventually absorbed into the population of medieval Europe; as late as 575 one still comes across Iranian nam