There has been a castle on the site of current Balnagown Castle since the 14th century, although the present building was remodelled in the 18th and 19th centuries. Balnagown is the ancestral home of the Chiefs of Clan Ross.
In the early 14th century, a castle was begun at Balnagown by Hugh, Mormaer (Earl) of Ross. Hugh was husband of Maud, sister of King Robert the Bruce, although after Hugh's death in 1333, his family lost royal favour and their lands were forfeit. Balnagown was acquired by a stepson of Hugh in 1375 who expanded the estate, a process which continued over the following centuries. In 1585 Alexander Ross, 9th laird of Balnagown, was outlawed, as was his son George.
During the Wars of the Three Kingdoms, David Ross, 12th of Balnagown, fought for King Charles II at the Battle of Worcester (1651), although he was captured and died in the Tower of London. The 13th laird, another David, married Anne, daughter of James Stuart, 4th Earl of Moray, in 1666. David and Anne rebuilt Balnagown, as attested by a datestone of 1672 on the castle, although they left no heir, and the estate passed to the Rosses of Halkhead in 1711.
In 1754 Balnagown passed to another branch of the family, when it was inherited by Admiral Sir John Lockhart-Ross, 6th Baronet. The admiral spent much time and money improving the Balnagown estate. His son and heir Sir Charles Lockhart-Ross consulted James Gillespie Graham on Gothic Revival style alterations to the castle, and Italian gardens were laid out. Sir Charles Ross, 9th Baronet, inherited in 1911. He continued the tradition of agricultural improvement, introducing the silo and the combine harvester to the estate. He also invented the Ross rifle, which he had manufactured in Canada. To prevent the seizure of Balnagown by the Inland Revenue, Ross had the estate declared a ward of the court of Delaware, and he was subsequently unable to return to Britain for fear of imprisonment. From his death in 1942, until 1972, the castle was unoccupied and became dilapidated. In 1972, it was purchased by Mohamed Al-Fayed, who began restoration of the house and grounds.
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The Clementinum is a historic complex of buildings in Prague. Until recently the complex hosted the National, University and Technical libraries, the City Library also being located nearby on Mariánské Náměstí. The Technical library and the Municipal library have moved to the Prague National Technical Library at Technická 6 since 2009. It is currently in use as the National Library of the Czech Republic.
Its history dates from the existence of a chapel dedicated to Saint Clement in the 11th century. A Dominican monastery was founded in the medieval period, which was transformed in 1556 to a Jesuit college. In 1622 the Jesuits transferred the library of Charles University to the Klementinum, and the college was merged with the University in 1654. The Jesuits remained until 1773, when the Klementinum was established as an observatory, library, and university by the Empress Maria Theresa of Austria.