 He married on 3 December 1892 Frances Laura Arabella, former wife of the explorer and author Harry de Windt, and sister of the 1st Viscount Long of Wraxall.There were no children from the union.Lyster died at 10 Gloucester Gate, Regent's Park, London, on 17 March 1920, and was buried at Braden Lane, near High Wycombe, Buckinghamshire.