1250	The first parts were built and used as a tithe barn.
	1514	The emperor Maximilian entrusted Georg von Rottal and Sigmund von Dietrichstein with the lordship Wachsenegg..
	1540	Georg Ritter von Kleindienst was custodian of Dietrichstein's heirs and therefore managed Birkenstein, which was part of Wachsenegg. Kleindienst gained great wealth through arsenic mining. The house "to the big crayfish" in Graz was built by Kleindienst's family.
	1566	Adam von Dietrichstein sold half of Wachsenegg's property to the castle's care taker Georg von Kleindienst sen. as his freehold.
	1571	Georg Kleindienst senior's descendant, also a castle care taker of Wachsenegg, married to Judith von Rottmannstorff, bought the castle Birkenschein (Pürkstein) "situated at the market Pirkfeld with six houses grouped together". As a result, he built a fortification with a ring wall, which was to protect the inhabitants. Back then, the castle didn't have any corridors. The name Pürgstein (later on Birkenstein), derives from a hill nearby which was overgrown by birch trees (Birken). Anna Maria, neé Steinbeiß, married Thomas Freiherrn von Cassinedi after her first husband, Christoph von Kleindienst, had passed away. Josef Count von Steinbeiß inherited Birkenstein from his aunt Anna Maria.
	1707	Peter Schaffer receives a letter of legitimisation from Josef Graf von Steinbeiß.
	1707	On December 27th, Johann Josef Count Steinbeiß sells Birkenstein to Max Siegmund Count von Trauttmansdorff for an amount of 80.000 guilder.
	1730	Ernst Sigmund Count Trauttmansdorff inherits Birkenstein.
	1749	Max Count Trauttmansdorff inherits Birkenstein.
	1777	Weickard Konrad Count Trauttmansdorff inherits Birkenstein. The castle Birkenstein counts 28 rooms, a chapel and the new as well as the old pharmacy.
	1809	On March 6th, Sebastian Rosenkart buys Birkenstein.
	1810	On August 9th, Baron von Steigentesch purchased the castle Birkenstein from Rosenkart. The castle was thoroughly renovated.
	1811	On July 1st, Christian Theodor Baron von Forstern takes over Birkenstein. The library was not soled together with the castle. In 1815, Forstern goes bankrupt.
	1815	On Mai 9th, Birkenstein is being auctioned and Franz Baronet von Schuster k.k. cavalry captain, acquires Birkenstein.
	1820	Ludwig Gabriel Comte de Manneville e Vicomte de la Croix et du Mesnil 1784-1832 (Great-great-great-grandfather of the present owner) acquires the lordship Birkenstein from Franz Ritter von Schuster. Ludwig was married to Clementine Baroness von Raglovich, the daughter of the General of the Bavarian Infantry (Clemens Wenzel Baron von Raglovich). Ludwig was imperial chamberlain and good friend of Baron Gudenus, who gained the lordship Thannhausen. Ludwig Ludwig bricked up the open Renaissance hallways and built two windows per arch into the new walls. At the same time, during this baroque era, all doors and door frames had been removed. The family Manneville had been chevaliers of the king of France and his close confidents and had also been in England with Wilhelm the conqueror, where the Manneville built the white tower in London in 1135 (Sir Geoffrey de Mandeville, commander of the tower with his own Mandeville chapel in the white tower). At the time of Richard Lionheart, the Mandeville settled down in the north-east of London as the Counts of Essex. Gabriel Ludwig's father, Gabriel Francois Comte de Manneville, commander of the French King's guard and his advisers, married to the Comtesse Adelaide Le Duc, had to leave France during the revolution. Thus, the Manneville received higher French annuities and Ludwig XVIII paid back the 25.000 Livres he had loaned.
	1816	Ludwig was allowed to remain in the Austrian military whilst keeping the French citizenship by receiving a patent in December 25th 1816.
	1821	Ludwig Comte de Manneville was admitted into the Landsmannschaft of Styria.
	1832	Ludwig dies in Vienna.
	1832	Maria Anna Comtesse de Manneville inherits the lordship Birkenstein. She was an exceptional painter and portrayed almost the entire upper Feistritztal.
	1838	Clementine Comtesse de Manneville, Ludwig's widow, married in second marriage Moritz Blagatinschegg, Edler von Kaiserfeld, whose name changed to Moritz von Kaiserfeld and therefore never became landlord of Birkenstein.
	1848	Kaiserfeld was voted into the parliament of Styria.
	1849	Until then, most of the houses in Birkfeld were property of the lordship Birkenstein.
	1850	Kaiserfeld was delegate of Styria in the Parliament of Frankfurt.
	1851	Kaiserfeld becomes mayor of Birkfeld.
	1856	Maria Anna Manneville, landlady of Birkenstein, Kaiserfeld's stepdaughter got married to Hermann Count Wurmbrand Lord of Radkersburg in June 24th. He was co-founder of the railway line to Ratten.
	1861	Kaiserfeld becomes member of Styria's parliament for the districts Birkfeld, Weit and Gleisdorf. In the same year, he becomes member of the Imperial Assembly in Vienna.
	1864	Doctorate of honour at the faculty of law in Graz.
	1871 - 1884	Governor of Styria.
	1885	Kaiserfeld dies in Birkenstein.
	1882	Franz Count Wurmbrand Stuppach, 1857-1908, son of Maria Anna, marries Gabrielle Freiin Stadl, last of the House of Stadl, great-grandmother of the current owner.
	1903	Johanna Reichsgräfin Wurmbrand - Stuppach, her daughter, marries Marchese Antonio Tacoli, who inherited the castle Schieleiten from his father Achille Marchese Tacoli.
	1916	Antonio Tacoli died from war injuries in the military hospital. He gained great fame for being the first man, who refused a duel in the Austrian military service. The duel was a thesis written by his great-grandchild Olivia Princess Thurn & Taxis.
	1934	Johanna's second-eldest son, Gherardo Tacoli (1911-1996) continued the management of Birkenstein together with his mother.
	1965	Marchese Gherardo Tacoli becomes chairman of the 700th anniversary of the market township Birkfeld.
	1970-1975	Marchese Gherardo Tacoli built the first canalisation together with the councillor of commerce Josef Rosel in Birkfeld without any financial subventions or taking out a loan.
	1991	For his abundant merits Gherardo Marchese Tacoli is being nominated honorary citizen of Birkfeld.
	1996	Gherardo Marchese Tacoli died in December 21st, 1996. Alexander Marchese Tacoli inherits Birkenstein form his father.
	2004	INTERMUSICA was founded. Alexander Tacoli places the family's escutcheon and the castle Birkfeld at Intermusica's disposal.
	2005	First event of the INTERMUSICA-competition with a competition of soloists and the symphonic brass orchestra and the award of the "Golden Daw".