He was s of Sir Michael MILNE-WATSON 3rd Bt 1910-99 and Mary Lynette Gunion 1914-93 d of Harold Carleton BAGNALL of Auckland, NZ. He m 1st 1970 (div 1981) Beverley Jane Gabrielle d of Philip COTTON of Majorca and had a son and a dau. He m 2nd 1983 as her 2nd h Gisella b 1948 reg Q2 London d of Hans John K TISDALL 1910-97 of Chelsea, London by his c1941 m reg Q1 London to Isabel C A GALLEGOS 1911-2007 and had a further son. His elder son succeeds him.
[Sir] DAVID ALISTAIR Milne-Watson [5th Bt] has yet to establish his claim (resident Brazil) b 24 Aug 1971: m 2000 Sandra Maria GERALDI and had a son (not in DPB online)
SON LIVING
RAPHAEL GERALDI b 5 Jan 2002 (not in DPB onlin: peerage dot com’s source is a 2018 email from the now 5th Bt)
HALF-BROTHER LIVING (son of 4th Bt by 2nd m)
Oliver b 1985: m 2019 Frances dau of Ian REYNOLDS
SISTER LIVING (dau of 4th Bt by 1st m)
Emma Victoria b 1974: m 2000 Elliot James b 1972 reg Q3 Horsham s of Ronald A WAIGHT b 1948 reg Q3 Brighton of E Sussex by his c1970 m reg Q1 Sussex to Michelle b 1949 reg Q3 Surrey d of Gerald KIERNAN 1921-90 by his 1947 m reg Q3 Surrey to Yvonne Margaret COMPTON b c1925 reg Q1 Croydon, and had issue Finley James Francis WAIGHT b 2006 ___ Beatrice Willow Rose WAIGHT b 2003.