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The Constantinian Order is a dynastic institution dedicated to promoting charitable, humanitarian, cultural and heritage initiatives. It aims to make a difference in today’s world in areas such as providing assistance to people threatened by poverty, exclusion or war, or to those persecuted for their faith, as well as promoting culture in the form of tangible and intangible heritage.

It is one of the oldest international equestrian-religious orders.

The Order’s supposed legendary origins are attributed to its foundation by Isaac Angelo, Emperor of Constantinople

In 1550, Pope Julius III recognised the ‘Sacred Constantinian Military Order of St George’ through the papal bull Quod Aliasla, in which the title and dignity of Grand Master of the Constantinian Knights were conferred upon Andrés Ángelo y Comneno.

With the extinction of the male line of the Angeli Comneni family, the office of Grand Master was established by an agreement of 1698 concerning Duke Francesco Farnese and his successors as heirs of the Farnese family, in an act of cession confirmed by the Emperor and by Pope Innocent XII, in what is known as the brief Sincerae Fidei of 1699. When Antonio Farnese, Duke of Parma, died without issue in 1727, Charles of Bourbon, Infante of Spain—son of his niece Isabella Farnese and King Philip V of Spain—was called to the succession. On 6 October 1759, Charles III of Spain bequeathed all his Italian estates to his third son, Ferdinand I of the Two Sicilies, and on 16 October, as the ‘legitimate first-born son of the Farnese line’, he invested him as Grand Master of the Constantinian Order, a title transmissible to all first-born sons. Over time, it split into two branches known as the Spanish-Neapolitan and the French-Neapolitan branches.

This book, written by one of the most renowned experts in the field, is dedicated to its fascinating history.

Dimensions: Width: 233 millimetres; length: 295 millimetres.

First edition: Madrid, December 2018

First edition in this format: Madrid, July 2026

http://www.constantinianorder.org/

© Guy Stair Sainty

© The Constantinian Order of St George

© Publisher: AEBOE

Historical adviser for the Spanish edition: Amadeo Martín Rey y Cabieses

Translation by Paz Hernández-Xesta Cabrera

NIPO: 144-26-082-9

Legal Deposit: M-18483-2026

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