This might answer a few questions or create more

Memoir of General Rebow.

He was Born in1770, and was the Son of  Richsrd Slater,Esq the descendant an old Derbyshire Family resident for several generations at Chesterfield, in that county.

He assumed the surname of Rebow in addition to his patronymic on his marriage with Mary Hester,eldest daughter and eventually sole heiress of Isaac Martin Rebow ,Esq, of Wivenhoe park, who was for many years Colonel of the Essex Militia, and recorder and M.P for Colchester  of which his ancestors had been also the Representatives in parliament for three generations.

General Rebow entered the army 14th Nov. 1787 as an Ensign in the 60th Foot and accompanied that regiment to the East indies.

General Rebow  married,as already stated , the heiress of the Wivenhoe Park Estate, which Lady died 23rd July 1834, having had issue two daughters, viz, Mary Emma, who died young in 1804, and Mary Martin , who also assumed the additional surname of Rebow, and married first in 1824Sir Thomas Ormsby, Bart.   And secondly in 1835 John Gurdon, Esq,second son of Theophilas Thornhaugh Gurdon ,Esq of Letton, Norfolk, but of neither of these marrieges is there surviving issue, and Lady Ormsby Rebow pre-deceased her Father 17th Sept. 1842.  The Family therefore ,both in name and blood , has now become extinct.
Francis Slater Rebow commissioned  John Constable in 1816 to commit to canvas the house and grounds for a fee of 100 guineas, the painting is now in the national gallery of art in Washington D.C.
Genersal Francis Slater rebow died in 1845.
Mary Hester Rebow died in 1834 wife of General Rebow .
 Mary Martin died 1842 aged 38 years.
When General Rebow died the estate passed to his Son in law John Gurdon Rebow, when he  died the estate passed on to Hector Gurdon Rebow , and in 1902 the estate was purchased by Charles Edmund Gooch.

The gentleman's magazine 1845.