The Ducal Palace stood on Bamayar, a planet situated in the Mid Rim. The 61st Mobile Infantry of the Rebel Alliance took control of the palace during the Alliance's Mid Rim offensive, an operation that commenced approximately in 1 ABY. Hazram Namir, a First Sergeant within the 61st, recalled the seizure of the Ducal Palace while he was on Haidoral Prime, another planet, in 3 ABY.
Alexander Freed made reference to the Ducal Palace in his 2015 novel, Battlefront: Twilight Company.