https://en.wikipedia.org/wiki/G%C3%B6kt%C3%BCrks
"Chinese sources linked the Hu on their northern borders to the Xiongnu just as Graeco-Roman historiographers called the Pannonian Avars, Huns and Hungarians "Scythians"."
"Peter B. Golden points to the possibility that the leaders of the Goturco Empire, the Achinas, were originally an Indo-European clan , possibly Iranians , who later adopted the Turkic , but inherited their original Indo-European titles. The turcologista Wolfgang-Ekkehard Scharlipp wrote that a remarkable amount of early Turkic titles originate in Iran."
"The khanate received Buddhist missionaries , whose teachings were incorporated into Tengriism . Later, most Turks who settled in Central Asia , the Middle East and Africa adopted the Islamic faith ."
"Göktürk allied Justinus II(was Eastern Roman Emperor) with the Sassanid , even though Sasanider had previously been allies of the Turks. However, Byzantine support for the Avars led to hostilities with the Turks, who began to attack the Crimea (Panticapaeum in 576 and Khersonesos in 581). By the turn of the 580s, the Turkish Empire was divided into eastern and western parts"
"The Göktürks were Tengrists by religion , but they embraced the teachings of other religions such as Buddhism and Zarathustralism. Tasparan (572-581) converted to Buddhism and translated the Nirvana Sutra into Turkish . He also provided refuge for Buddhist monks deported by China in 574"
https://en.wikipedia.org/wiki/Sasanian_Empire
https://en.wikipedia.org/wiki/Mah%C4%81y%C4%81na_Mah%C4%81parinirv%C4%81%E1%B9%87a_S%C5%ABtra

https://en.wikipedia.org/wiki/Hungarian_invasions_of_Europe
http://www.russianlegitimist.org/how-is-grand-duchess-maria-related-to-other-royal-families
https://en.wikipedia.org/wiki/House_of_Capet
https://en.wikipedia.org/wiki/House_of_Mecklenburg
https://en.wikipedia.org/wiki/Order_of_the_Starry_Cross
"The order still exists under the House of Habsburg, though the Austrian Empire no longer exists."
https://en.wikipedia.org/wiki/Order_of_the_Crown_of_India
https://en.wikipedia.org/wiki/Emperor_of_India