Lynn Seymour was born in Canada in 1939. She studied in Vancouver and then at Sadler's Wells School (in class with Antoinette Sibley and Marcia Haydée!). Joined Covent Garden Opera Ballet in 1956, then the Touring Royal Ballet in 1957 and a year later the Royal Ballet as a soloist. Promoted to principal in 1959. A dancer with lyrical technique and intense dramatic power. She worked closely with MacMillan and created a wide range of roles with him including Girl in Invitation (1960), the Fiancée in Baiser de la fée (1960), Juliet in Romeo and Juliet (1965), Anna Andersen in the one-act version of Anastasia (1967) and later the Grand Duches Anastasi in the three-act version (1971), and Mary Vetsera in Mayerling (1978). She also danced the classic roles, including Odette-Odile, Giselle and Aurora. With Ashton she created the Young girl in Two Pigeons (1961) and Natalia Petrovna in A Month in the Country (1976). From 1966 to 1969 she was prima ballerina at Berlin Opera Ballet under MacMillan's direction. She returned to the Royal Ballet in 1971 as principal guest ballerina (until 1978).