Princess Helena Victoria of Schleswig-Holstein Schleswig-Holstein. In June 1917, a notice appeared in the Court Circular that a Royal Warrant was to be prepared by George V dispensing with his cousins' use of the "Schleswig-Holstein-Sonderburg-Augustenburg" part of their titles. However no warrant was issued, nor were they formally granted the titles of Princesses of Great Britain and Ireland nor of the United Kingdom. British honours Foreign honours Princess Helena Victoria of Schleswig-Holstein Princess Helena Victoria of Schleswig-Holstein (Victoria Louise Sophia Augusta Amelia Helena; 3 May 1870 – 13 March 1948) was a granddaughter of Queen Victoria of the United Kingdom. Princess Helena Victoria (always known
Helena Kantakouzene, Empress of Trebizond Helena Kantakouzene, Empress of Trebizond Helena Kantakouzene (died 1463) was the second wife of David of Trebizond. She was the last Empress of Trebizond. Donald Nicol has argued that Helena was the sister of George Palaiologos Kantakouzenos, and thus the granddaughter of Matthew Kantakouzenos and possibly the daughter of Demetrios I Kantakouzenos. Theodore Spandounes reports that George visited her in Trebizond after 1437. It is unclear which of David's children were also hers; his five children—three boys and two daughters—have been attributed variously to Helena or David's first wife Maria of Gothia by various genealogies. Nevertheless, the oldest sons died