1911 Encyclopædia Britannica, Volume 18… (1911)
“ As Albert left no children, Meissen was seized by the emperor Henry VI. as a vacant fief of the empire; but Dietrich, called the Oppressed, secured the mark after Henry’s death in 1197. Dietrich married Jutta, daughter of Hermann I., landgrave of Thuringia, and was succeeded in 1221 by his infant son Henry, surnamed the Illustrious; who on arriving at maturity obtained as reward for supporting the emperor Frederick II. against the pope a promise to succeed his uncle, Henry Raspe IV., as landgrave of Thuringia. In 1243 Henry’s son Albert was betrothed to Margaret, daughter of Frederick II. ”
