Nellie Butt
A grande dame of the Fourecksian Opera House in Bugarup. To help out the desperate Charley and get his help in staying one step ahead of pursuit, Rincewind devised a dessert in her honour: the Peach Nellie.
Now that XXXX is in contact with the rest of the Disc, who knows, the Ankh-Morpork Opera House might yet be graced by her presence.