Simeon married Princess María of Bourbon-Two Sicilies, daughter of
Infante Carlos, Duke of Calabria and his wife
Princess Anne of Orléans, on 13 July 1996 in La Toledana,
Spain.[4][5] Simeon is a (half) second cousin of his wife's father, both being great-grandchildren of
Robert I, Duke of Parma. María's father descends from Duke Robert's first marriage and Simeon from the Duke's second marriage.
^de Badts de Cugnac, Chantal. Coutant de Saisseval, Guy. Le Petit Gotha’’. Nouvelle Imprimerie Laballery, Paris 2002, p. 172-174, 196-197, 404 (French)
ISBN2-9507974-3-1
^Genealogisches Handbuch des Adels, Fürstliche Häuser XV. "Spanien". C.A. Starke Verlag, 1997, pp. 104-105. (German)
ISBN3-7980-0814-0.
Generations are numbered by male-line descent from the first archdukes. Later generations are included although Austrian titles of nobility were abolished in 1919.