رودولف الأول
Rudolf was the eldest son of the Saxon duke Albert II (c. 1250 – 1298), who initially ruled jointly with his brother John I but gradually concentrated on the Ascanian Saxe-Wittenberg territory. Rudolf's father consolidated his position by marrying the Habsburg princess Agnes (1257–1322), a daughter of King Rudolf I of Germany, whom he had elected King of the Romans in 1273.