Buscarello de Ghizolfi, or Buscarel of Gisolfe was a European who settled in Persia in the 13th century while it was part of the Mongol Ilkhanate. He was a Mongol ambassador to Europe from 1289 to 1305, serving the Mongol rulers Arghun, Ghazan and then Oljeitu. The goal of the communications was to form a Franco-Mongol alliance between the Mongols and the Europeans against the Muslims, but despite many back and forth communications, the attempts were never successful.
Little is known of Buscarello except for his work as ambassador, and that he was a member of the powerful Ghisolfi family. The first mention of him is in 1274, in relation to the arming of a galley. The next is from 1279, which records that he was in the city of Ayas in Cilician Armenia, at the time a vassal state of the Mongol Empire. He then entered the service of the Mongol ruler Arghun, becoming Officer of his guard, with the title of Qortchi ("Quiver carrier").
Buscarello had a son, Argone de Ghizolfi, whom he named "Arghun" after his patron.
In 1289, Arghun sent a mission to Europe, with Buscarel as ambassador. Other adventurers, such as Tommaso Ugi di Siena and Isol the Pisan, are known to have played similar roles at the Mongol court, as hundreds of Western adventurers entered into the service of Mongol rulers. Buscarel's journey was the third attempt by Arghun to form an alliance with the Europeans.
Buscarel was in Rome between July 15 and September 30, 1289, and in Paris in November–December 1289. Via Buscarel, Arghun informed the European nobles, such as King Philip IV of France and Edward I of England, that Arghun would march his troops as soon as the Crusaders had disembarked at Saint-Jean-d'Acre, and that the Mongols would deliver between 20,000 and 30,000 horses and all needed supplies to the Crusaders if they would come to the Holy Land. Arghun also promised that he would deliver Jerusalem to the Europeans if Egypt was successfully conquered: