There have been three baronetcies created for members of the Sedley ( otherwise Sidley) family of Kent, all in the Baronetage of England.
He was succeeded in turn by his three sons, the third of whom, the fifth Baronet, was a politician, wit and dramatist.
His only legitimate child was Catherine Sedley, Countess of Dorchester, mistress of James II.
[1] The Baronetcy Sedley of Great Chart in the County of Kent, was created in the Baronetage of England on 24 September 1621 for Isaack Sedley, a grandson of the 1st Baronet of Aylesford by his third son Nicholas.
[2] The Baronetcy Sedley of Southfleet in the County of Kent, was created in the Baronetage of England on 10 July 1702 for Charles Sedley, the grandson of the fifth Baronet of Aylesford by an illegitimate son Charles.