Question: Seinsheim is known for its connection to the family that is extinct save for which Czech family?

Context paragraphs:
Berousek family: The Berousek family is a Czech family, originally from Vilémov, with members who have been circus performers for two centuries.  Skills include comedy, puppetry, acrobatics, equestrianism, bear training, tight rope walking, and juggling.

Nováci: Nováci is a Czech sitcom that ran for two seasons beginning in 1995.  The sitcom's main storyline revolves around a Czech family called Nováci.  The family hosts an American student of sociology, Jeremy Washington, who eventually purchases a home from a family involved with the Russian mafia.

Huťka: Huťka is a Czech family name.  In Slovakia the name is Hutka.

House of Schwarzenberg: The House of Schwarzenberg is a Czech (Bohemian) and German (Franconian) aristocratic family, and it was one of the most prominent European noble houses.  The Schwarzenbergs are members of the Bohemian nobility and German nobility and achieved the rank of Princes of the Holy Roman Empire.  The family traces its roots to the Lords of Seinsheim during the Middle Ages.

The Princess with the Golden Star: The Princess with the Golden Star (Czech: Princezna se zlatou hvězdou ) is a 1959 Czech family fantasy film written and directed by Martin Frič.

Shimek: Shimek, Szymek, or Simek are different spellings of a Czech family name.  The name is derived from Czech and Croatian Šimek, or Polish Szymek.  The name comes from a hypocorism of the name Simon (Szymon in Polish and Czech).  Shimek is the Anglicized spelling.

Jankovský of Vlašim: Jankovský z Vlašimi is an old Czech family and a member of the House of Vlašim.  In the 13th Century at Jankov in Bohemia, the family began to split into several branches.

Benda Chamber Orchestra: Benda Chamber Orchestra is a Czech amateur music ensemble in Usti nad Labem, Czech Republic.  It is named after the renowned Czech family of musicians and composers of the 18th century - the Bendas (František Benda or Franz Benda, Jiří Antnonín Benda or Georg Anton Benda).

Baron Raby: There have been two creations of the title Baron Raby, both in the Peerage of England.  The first was in 1640, as a subsidiary title of the Earl of Strafford (first creation).  The first earl was attainted and his peerages declared forfeit in 1641, but heir obtained a reversal in 1662.  On his death, all his peerages became extinct save the Barony of Raby, which continued until the death of the fifth baron in 1799.  Confusingly, the third baron was again created Earl of Strafford in 1711, and the earldom and barony remained merged until their mutual extinction.

Seinsheim: Seinsheim is a municipality in the district of Kitzingen in Bavaria in Germany.  It is best known for its connection with the countly Seinsheim family, which died out in 1958 with the exception of the princely House of Schwarzenberg branch of the family.

Supporting paragraphs: Seinsheim House of Schwarzenberg
Answer: House of Schwarzenberg