His son John de Monceux 1316 – His son John de Monceux 1330 – His sister Maud de Monceux (married Sir John Fiennes) 1351 – Her eldest son William Fiennes 1359 – His son Sir William Fiennes 1402 – His son Sir Roger Fiennes (built Herstmonceux Castle) 1449 – His son Sir Richard Fiennes (married Joan Dacre, 7th Baroness Dacre) 1483 – His grandson Sir Thomas Fiennes 1533 – Sir Thomas Fiennes 1541 – His eldest son Thomas Fiennes 1553 – His brother Gregory Fiennes 1594 – His sister Margaret Fiennes (married Sampson Lennard). 1612 – Her son Henry Lennard, 12th Baron Dacre 1616 – His son Richard Leonard 1630 – His son Francis Leonard 1662 – His son Thomas Leonard 1708 – Estate purchased by George Naylor for £38,215 1730 – His nephew Francis Naylor 1775 – His half-brother Robert Hare who demolished the castle in 1776 ? – His son Francis Hare Naylor 1807 – Purchased by Thomas Read Kemp 1819 – Purchased for John Gillon MP 1846 – Purchased by Herbet Barrett Curteis MP ? – His son Herbert Mascall Curteis ? – His son Herbert Curteis 1911 – Purchased by Lieutenant-Colonel Claude Lowther (restoration began) 1929 – Purchased by Reginald Lawson 1932 – Purchased by Sir Paul Latham (completed restoration under Walter Godfrey) 1946 – Purchased by H.M. Admiralty for The Royal Observatory 1965 – Transferred to the Science Research Council 1989 – Purchased by James Developments, transfers to a receiver, the Guinness Mahon Bank 1993 – Purchased for Queen's University, Ontario (Canada) as a gift from Drs. Alfred and Isabel Bader See also Castles in Great Britain and Ireland List of castles in England List of sites on the National Register of Historic Parks and Gardens Herstmonceux Place References Notes Bibliography John Goodall in Burlington Magazine (August 2004). External links of Herstmonceux Castle Queen's University (Canada)'s Bader International Study Centre at Herstmonceux Castle The Observatory Science Centre, Herstmonceux Map of the Royal Greenwich Observatory at Herstmonceux A Personal History of the Royal Greenwich Observatory at Herstmonceux Castle, 1948–1990 by George Wilkins, a former member of staff Education in East Sussex Castles in East Sussex Houses in East Sussex Queen's University at Kingston Grade I listed buildings in East Sussex Grade II* listed buildings in East Sussex Grade II* listed parks and gardens in East Sussex 1441 establishments in England Castle