Guy Stair Sainty, KStJ KC*SG (born 7 December 1950)[2] is a British art dealer and author on nobility, royal genealogy, and heraldry.
[3] In 1979, he moved to New York but returned to Europe in 2002, first to Paris and then to London where the Stair Sainty Gallery has been based since 2005.
The gallery specialises primarily in French and Spanish painting from the sixteenth to the early twentieth century and has sold works of art to many of the world's great museums, publishing catalogues on a range of artists and schools.
[6] Sainty is a correspondent member of the Real Academia Matritense de Heraldica y Genealogia (Royal Academy of Heraldry and Genealogy of Madrid).
On 15 January 2014, Sainty was awarded the rank of Commander (Encomienda) of the Order of Isabella the Catholic by King Juan Carlos I and received unrestricted permission to wear the decorations on 27 July 2017.
In March 2016, the Italian Court of Appeal of Venice decided in Sainty's favour, rejecting the claim of Poidimani.