Wikipedia
Albracca
Albracca (also spelled Albraca and Albrace) is a major city of Cathay in the Italian romantic epics Orlando innamorato by Matteo Maria Boiardo and Orlando furioso by Ludovico Ariosto. In the story it is the walled city and fortress where Angelica and the knights she has befriended make their stand when attacked by Agrican, emperor of Tartary.
Scholars have identified Albracca with Bukhara in modern Uzbekistan, in part because the siege of Albracca by Agrican described in the Orlando innamorato resembles the historic siege of Bukhara by Genghis Khan in 1220.