its possessions, the Leiningen family was divided around 1317 into two branches: Leiningen-Westerburg The elder of these, whose head was a landgrave, died out in 1467. Upon this event, its lands fell to a female, the last landgrave's sister Margaret, wife of Reinhard, Lord of Westerburg, and their descendants were known as the family of Leiningen-Westerburg. Later this family was divided into two branches, those of Leiningen-Westerburg-Alt-Leiningen and Leiningen-Westerburg-Neu-Leiningen, both of which are extinct today. After the French Revolution, the Left Bank of the Rhine was conquered during the War of the First Coalition and annexed by France in 1793. The two counts of Alt- and Neu- Leiningen were arrested and jailed in Paris. They lost their territories. In 1803 they were compensated with secularized Ilbenstadt Abbey (at Niddatal) and Engelthal Abbey. The German mediatization brought an end to these short-lived counties in 1806, when their territories were divided between the Grand Duchy of Berg, the Grand Duchy of Hesse, Nassau-Weilburg and Nassau-Usingen. Ilbenstadt Abbey was sold by the House of Leiningen-Westerburg-Altleiningen in 1921, Engelthal Abbey by the heirs of the House of Leiningen-Westerburg-Neuleiningen in 1952. Leiningen-Hardenburg Meanwhile, the younger branch of the Leiningens, known as the family of Leiningen-Hardenburg, was flourishing. On 27 June 1560, this branch was divided into the lines of Leiningen-Dagsburg-Hardenburg, founded by Count Johann Philip (d. 1562), and Leiningen-Dagsburg-Heidesheim or Falkenburg, founded by Count Emicho (d. 1593). In 1658 Leiningen-Dagsburg-Falkenburg divided into Leiningen-Dagsburg (extinct 1706) Leiningen-Heidesheim (extinct 1766) Leiningen-Guntersblum (extinct 1774) The county of Leiningen-Dagsburg was inherited by Leiningen-Dagsburg-Hardenburg in 1774. Leiningen-Guntersblum was divided between two further side branches: Leiningen-Dagsburg-Falkenburg-Guntersblum, which was deprived of its lands on the left bank of the Rhine by France, but in 1803 received Billigheim as a compensation, then called Leiningen-Billigheim. In 1845 they also acquired Neuburg Castle at Obrigheim. The branch became extinct in 1925. Leiningen-Heidesheim, which in 1803 received Neudenau and became known as Leiningen-Neudenau (extinct in 1910). In 1779, the head of the Leiningen-Dagsburg-Hardenburg line was raised to the rank of a Prince of the Holy Roman Empire with the title of Prince of Leiningen. In 1801, this line was deprived of its lands on the left bank of the Rhine by France, but in 1803 it received Amorbach Abbey as an ample compensation for these losses. A few years later, the Principality of Leiningen at Amorbach was mediatized, and its territory is now included mainly in