_. The Dowager Baroness Rockley, who died 19 December, 2017, aged 79, was the widow of the 3rd Baron Rockey.
She was born Lady Sarah Primrose Beatrix Cadogan, 23 February, 1938, the eldest daughter of the 7th Earl Cadogan (1914-97), by his first wife the former Hon Primrose Lilian Yarde-Buller (d 1970), daughter of the 3rd Baron Churston.
She married 18 Nov, 1958, the then Hon James Hugh Cecil (b 5 Apr, 1934), son and heir of the 2nd Baron Rockley (1901-76, by his wife the former Anne Margaret Meade-Fetherstonhaugh (d. 1980), scion of the Earls of Clanwillian. Her husband succeeded as 3rd Baron Rockey, 6 Jan, 1976, and died 5 December, 2011.
Lady Rockley leaves a son, Anthony, the 4th Baron, and two daughters.