The Princely House of Liechtenstein is one of the oldest noble families. The family has over 100 members, of whom only a part lives in the Principality of Liechtenstein.
The Reigning Prince is the sovereign of the Princely House and, according to the Law on the Princely House , watches over the "reputation, honor, and welfare" of the Princely House. Prince Hans Adam II assumed the regency on 13 November 1989 after the death of Prince Franz Josef II.

The Princely Family elects a Family Council every five years. The Family Council acts as an instance of appeal for decisions arising from the Law on the Princely House.

Prince Hans-Adam II and Princess Marie have four children:

• Hereditary Prince Alois, born 11 June 1968
• Prince Maximilian, born 16 May 1969
• Prince Constantin, born 15 March 1972
• Princess Tatjana, born 10 April 1973

The Princely Family in the
courtyard of Vaduz Castle