Ki vette feleségül Babenbergi Margit cseh királyné-t?

Babenbergi Margit (ismert még mint Ausztriai Margit, németül: Margarete von Babenberg, csehül: Markéta Babenberská; 1204 körül – Krumau am Kamp, Osztrák Hercegség, 1266. október 29.), a Babenberg-házból származó osztrák hercegnő, VI. Dicsőséges Lipót herceg és Angelosz Teodóra leánya, aki (VII.) Henrikkel való első házassága révén német királyné és sváb hercegné 1225 és 1235 között, majd II. Nagy Ottokárral való második házassága révén cseh királyné 1253-tól 1261-es válásáig.

(VII.) Henrik (németül: Heinrich (VII.)), (1211. – 1242. február 12.) szicíliai király 1212-től, német király 1220-tól és sváb herceg (II. Henrik néven) 1216-tól.

Ottokar II (Czech: Přemysl Otakar II.; c. 1233, in Městec Králové, Bohemia – 26 August 1278, in Dürnkrut, Lower Austria), the Iron and Golden King, was a member of the Přemyslid dynasty who reigned as King of Bohemia from 1253 until his death in 1278. He also held the titles of Margrave of Moravia from 1247, Duke of Austria from 1251, and Duke of Styria from 1260, as well as Duke of Carinthia and landgrave of Carniola from 1269.

With Ottokar's rule, the Přemyslids reached the peak of their power in the Holy Roman Empire. His expectations of the imperial crown, however, were never fulfilled.

Ottokar was the second son of King Wenceslaus I of Bohemia (reigned 1230–1253). Through his mother, Kunigunde, daughter of Philip of Swabia, he was related to the Holy Roman Emperors of the Hohenstaufen dynasty, which became extinct in the male line upon the execution of King Conradin of Sicily in 1268.

Named after his grandfather King Přemysl Ottokar I, he was originally educated for the role of an ecclesiastical administrator, while his elder brother Vladislaus was designated heir of the Bohemian kingdom. He was possibly educated by the Bohemian chancellor Philip of Spanheim, who would later become a rival for the rule of the Duchy of Carinthia.