Animals Bold Ruler American Thoroughbred Hall of Fame racehorse6 April 1954 – 11 July 1971 Nasrullah2 March 1940 – 26 May 1959Miss Discoborn 1944 Bold Ruler6 April 1954 – 11 July 1971 Lamb Chopborn 1960Bold Bidderborn 1962Bold Ladborn 1962Boldnesian1963 – 1975Bold Ladborn 1964Gamely1964 – 17 May 1975Successorborn 1964What a Pleasureborn 1965Reviewerborn 1966Raja Bababorn 5 April 1968Secretariat30 March 1970 – 4 October 1989Wajimaborn 1972 Sire and damNNasrullah2 March 1940 – 26 May 1959MMiss Discoborn 1944OffspringLLamb Chopborn 1960BBold Bidderborn 1962BBold Ladborn 1962BBoldnesian1963 – 1975BBold Ladborn 1964GGamely1964 – 17 May 1975SSuccessorborn 1964WWhat a Pleasureborn 1965RReviewerborn 1966RRaja Bababorn 5 April 1968Secretariat30 March 1970 – 4 October 1989Wajimaborn 1972 From Wikipedia and Wikidata (public domain), updated daily.