 Furthermore, the House of Schwarzenberg acquired extensive land holdings in Bohemia in 1661 through a marriage alliance with the House of Eggenberg.In the 1670s, the Schwarzenbergs established their primary seat in Bohemia and, until 1918, their main residence was in Český Krumlov, Bohemia (now in Czechia).Due to the absence of a male heir and his only daughter Maria Anna married to Prince Ferdinand of Schwarzenberg, Johann Ludwig II.