Prince Alexander Magnus Friedrich Barclay de Tolly-Weymarn (Russian: Алекса́ндр Петро́вич Баркла́й де То́лли-Ве́ймарн, Alexander Petrovich Barklay-de-Tolli-Veymarn; December 22, 1824 – May 8, 1905), born as Alexander Magnus Friedrich von Weymarn, was a Baltic German military commander who served in the Imperial Russian Army.
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Life and family
He was a member of the Baltic German nobility, and the son of General Wilhelm Peter Jost von Weymarn (1793–1846) and his wife, Christina Augusta von Lueder (1803–1887). He married Marie Friederike von Seddeler in 1849 and had three children: daughters Alexandrine "Ada" Auguste Olga Barclay de Tolly-Weymarn and Marie "Mira" Georgia Augusta Barclay de Tolly-Weymarn, and son Ludwig Alexander Michael Barclay de Tolly-Weymarn.
His maternal grandmother was the sister of Prince Michael Andreas Barclay de Tolly, a very prominent military commander who was made a count in 1813 and a prince in 1815 by Alexander I of Russia. After the extinction of the original Barclay de Tolly princely line upon the death in 1871 of Prince Michael's son (Magnus Barclay de Tolly), Alexander von Weymarn was allowed to assume the title of Prince Barclay de Tolly-Weymarn in 1872, by permission of Alexander II of Russia.
Honours
Russian orders and decorations
Knight of the Imperial Order of Saint Anna, 3rd Class, 1849; 2nd Class, 1855; 1st Class, 1864
Knight of the Imperial Order of Saint Vladimir, 4th Class, 1856; 3rd Class, 1860; 2nd Class, 1869
Knight of the Imperial Order of Saint Stanislaus, 1st Class, 1861
Knight of the Imperial Order of the White Eagle
Knight of the Imperial Order of Saint Alexander Nevsky, 1886
Foreign orders and decorations
House and Merit Order of Peter Frederick Louis, 3rd Class
Grand Cross of the Order of the Dannebrog, 13 December 1867
Knight of the Order of the Red Eagle, 1st Class, 7 May 1873
Knight of the Order of the Iron Crown, 1st Class, 1874
Commander Grand Cross of the Royal Order of the Sword, 19 July 1875
Grand Cross of the House Order of the Wendish Crown, with Golden Crown, 16 February 1876




