This is all great information so far thanks guys. This is what I have found so far.
Sir Samuel Ongley died 1726
Samuel Ongley died 1747
Robert Henley-Ongley died 1785
Robert Henley Ongley 2nd Baron died 1814 of gout
Robert Henley Ongley 3rd Baron died 1877
1872 Old Warden Park was sold by Robert, 3rd Baron Ongley to Joseph Shuttleworth but let to Henry Browning when tenancy was over in 1875 Joseph Shuttleworth demolished it and built the present mansion on the site. It was designed by the Duke of Bedford's favourite architect, Henry Clutton
Joseph Shuttleworth died 1883
Colonel Frank Shuttleworth died 1913
Brigadier-General William McClaren Campbell died 1924 in Brussels
Richard Ormonde Shuttleworth died 1940 - killed in a night flying exercise whilst serving with the RAF
Dorothy Clotilda died 1968, aged 89
During the Second World War, the house was a Red Cross convalescent home and auxiliary hospital for airmen
July 1st 2012 Trevor Roche, 52, from Wiltshire, was killed when the 1923 De Havilland DH53 Humming Bird crashed at Old Warden Aerodrome
1815 Charles Dines gamekeeper, brutally murdered by a gang of around seven poachers near Southill Lake
1836
John Stonebridge gamekeeper
Samuel Butcher his assistant
1837+
Richard Long Aireton age 25 servent
1851
george.e.russell age 64 head. occ. late of east india co. civil service.
caroline russell age 55 wife.
jane.l.russell age 31 daughter.
caroline.m.a.russell age 28 daughter.
edward.g.russell age 22 nephew.
leonard russell age 70
george gare age 36 coachman.
george jennings age 21. b. warwickshire. occ. footman.
mary luter age 35. b. herefordshire. occ. housemaid.
giles parker age 30. b. wiltshire. occ. butler.
martha parker age 18. b. london. occ. under housemaid.
ann rennie age 31. b. cumberland. occ. ladies maid.
emma thompson age 41. b. exeter. occ. housekeeper.
susan wilson age 23. b. bedfordshire. occ. kitchenmaid.
1861
Joseph Stokes age 8 Scarecrow
George Scott age 8 Scarecrow
John Wiltshire, age 9 Scarecrow
George Spring, age 10 twitch gatherer
Charles Tanqueray?
1871
sarah hopkins age 67 laundress. head.
maria george age 47 domestic servant.
elizabeth davidson age 37 laundress.
jane monk age 25 laundress.
richard ellis age 22 groom.
Ann Payne age 30 Housekeeper Dom Serv
Mary Ann Payne age 27 Dom Serv
John Nottingham age 21 Groom
George Burrage, age 9 field keeper
Charles Nottingham age 9 farm boy
James Scott age thirteen kitchen boy.
1881
phylis white age 61 housekeeper
thomas bell age 27 1st footman.
lilli mither age 24 housemaid.
eliza thomas age 21 kitchenmaid.