One of the leading French Bailiffs of the Military Order of Malta, who had studied the Russian tradition provided a footnote in his book; "Nevertheless, the Tsars have exceptionally authorised the eldest sons of the descendants of hereditary commanders to wear the decorations. Such an authorisation can be cited in the military service records of 19 October 1867.(De Taube. p. 43) One can also find the name of Demidoff, in his quality as hereditary commander in the Almanach de Gotha (1885, p. 467 and 1923, p. 556) and in the Almanach de St Petersbourg, 1913/14 p. 178" " Pierredon, Count Marie Henri Thierry Michel de, Histoire Politique de l'Ordre Souverain de Saint-Jean de Jerusalem, (Ordre de Malte) de 1789 à 1955, Vol 2, page 197".