Archduke Sigismund, Grand Duke of Tuscany

Archduke Sigismund of Austria, Grand Duke of Tuscany (Sigismund Otto Maria Josef Gottfried Henrich Erik Leopold Ferdinand Von Habsburg-Lothringen; born 21 April 1966) is the current head of the Tuscan branch of the House of Habsburg-Lorraine and current claimant to the title Grand Duke of Tuscany .

Archduke Sigismund
Grand Duke of Tuscany
Head of the House of Habsburg-Tuscany
Tenure1993 – Present
PredecessorArchduke Leopold Franz
Heir apparentArchduke Leopold Amadeo
Born (1966-04-21) 21 April 1966
Lausanne, Switzerland
Elyssa Edmonstone
(m. 1999; div. 2013)
IssueArchduke Leopold Amadeo
Archduchess Tatyana
Archduke Maximilian
FatherArchduke Leopold Franz, Grand Duke of Tuscany
MotherPrincess Laetitia d'Arenberg
ReligionRoman Catholic


Sigismund was born in Lausanne the son of Archduke Leopold Franz and his first wife Princess Laetitia d'Arenberg, born Laetitia de Belzunce (and adopted by her stepfather Erik, 11th Duke of Arenberg).[1] Sigismund was educated in computer science and has worked as a banker.[2]

In 1993 Sigismund's father Leopold Franz renounced his rights as Head of the Grand Ducal Family of Tuscany in favour of Sigismund because his second marriage (after a divorce) conflicted with the laws of the Roman Catholic Order of Saint Stephen, of which he was then head. Since then, Sigismund has been the head of the grand ducal house of Tuscany.

Sigismund is Grand Master of the Order of Saint Joseph and the Order of Saint Stephen, the two orders of knighthood of the Grand Ducal House of Tuscany. He has also a served as a patron for the Almanach de Gotha.[3]

Sigismund was raised in Uruguay and Switzerland by his mother and father. His maternal family are said to possess businesses in Uruguay.


In 1999, Sigismund married Elyssa Edmonstone (born Glasgow, 11 September 1973), the only daughter of Sir Archibald Bruce Edmonstone, of Duntreath, 7th Baronet by his second wife Juliet Elizabeth Deakin.[4] Archduchess Elyssa is a great-great-granddaughter of Marshall Field and a third cousin of Camilla, Duchess of Cornwall. The Edmonstone family is an old Scottish family that was raised to a baronetcy in 1774; their best-known member was the royal mistress Alice Keppel. Through this family connection, Elyssa and Camilla, Duchess of Cornwall are third cousins. The couple are divorced since 25 June 2013, with annulment in 2016.[5]

The couple have three children:

  • Archduke Leopold Amadeo, Grand Prince of Tuscany (born 9 May 2001 in Glasgow), heir apparent to the headship of the House of Tuscany
  • Archduchess Tatyana of Austria, Princess of Tuscany (born 3 March 2003 in Livingston)
  • Archduke Maximilian of Austria, Prince of Tuscany (born 27 May 2004 in Livingston)

Sigismund lives with his family in Lausanne, Switzerland. In 2017, the renunciation of French citizenship (obtained by his ancestors and held by their descendants since loss of the Tuscan throne) was legally recorded for him and his children.[6]



  1. Arenberg Genealogy Archived 15 July 2007 at the Wayback Machine
  2. Enders, Gaetana (31 July 1999). "Remembering Tuscany: H.I.R.H. Sigismund of Austria and Elissa Edmonstone". Hello Magazine.
  3. Almanach de Gotha, Comité de Patronage
  4. "Archduke Sigismund of Austria and Miss E.J. Edmonstone". The Times. UK. 13 September 1999. p. 20.
  5. Genealogy of the Grand Ducal House of Tuscany
  6. Journal officiel de la République française - N° 275. 25 novembre 2017.
Archduke Sigismund, Grand Duke of Tuscany
Cadet branch of the House of Lorraine
Born: 21 April 1966
Titles in pretence
Preceded by
Archduke Leopold Franz of Austria
Grand Duke of Tuscany
Reason for succession failure:
Tuscany incorporated into the United Provinces of Central Italy
Archduke Amadeo,
Grand Prince of Tuscany
Line of succession to the defunct Austro-Hungarian throne
44th position
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