1800
DH: [name_u]Henry[/name_u] [name_m]Thomas[/name_m] Ponsonby, [name_m]Marquess[/name_m] of Duncaster (b. 1779) (21)
DW: [name_f]Elizabeth[/name_f] [name_f]Ann[/name_f] Ponsonby (née FitzRoy), Marchioness of Duncaster (b. 1779) (21)
DS: [name_m]Lord[/name_m] [name_u]Edward[/name_u] [name_u]Henry[/name_u] Ponsonby, [name_u]Earl[/name_u] of Northfield (b. 1798) (2)