Forgive me if this is all already known here, but the following is what I get from Cracroft's Peerage and Alan Freer's project on descendants of William the Conqueror, with a few pieces of information I've come across myself; sadly not much information was easily available, as others have mentioned.
(Robert) Keith Rous, 6th Earl of Stradbroke m. 1st, 1960 (div. 1977) Dawn Antoinette, dau. of Thomas Edward Beverley, of Brisbane, Queensland, Australia
1a Robert Keith (Viscount Dunwich) b. 1961
2a Wesley Alexander b. 1972
1a Ingrid Arnel b. 1963 m.? Christopher Pascal Cooper
1b Mollie Louise
m.? -
1b Sam [Rous] b. 1994
2a (Sophia) Rayner b. 1964 m.? Maurice - [Bassett Massey?]
1b Tate [Rous] b. 1993
1b Olivia [Rous] b. 1990
2b Kaylon [Rous] b. 1991
3b Cerrarna Jade [Rous] b. 1992
3a Heidi Simone b. 1966 m. 1991, Timothy Crick
1b Joshua William b. 1992
2b Thomas Oscar b. 1993
4a Pamela Keri b. 1968
5a Brigitte Aylena b. 1970
m. 2nd, 1977, Roseanna Mary Blanche, dau. of Dr Francis Reitman
3a Hektor Fraser b. 1978
4a Maximilian Otho b. 1981
5a Henham Mowbray b. 1983 m. Celia -
6a Winston Walberswick b. 1986
7a Yoxford Ulysses Uluru b. 1989
8a Ramsar Fyans b. 1992
6a Zea Katherina b. 1979
7a Minsmere Mathilda b. 1988