Biografia

She played LeVar Burton's mother in four different productions: Almos' a Man (1977), One in a Million: The Ron LeFlore Story (1978), La tragedia della Guyana (1980) and the Star Trek: The Next Generation (1987) episode Interface (1993). She also played his character Kunta Kinte's wife Bell Reynolds in Radici (1977), though by that time the role of Kunta had been assumed by John Amos.

Co-starred with James Earl Jones five times, twice playing Queen to his King -- in Il principe cerca moglie (1988), then in Il re leone (1994).

Sinclair, having died in 1995 at Los Angeles' Good Samaritan Hospital following a 13 year battle with leukemia, could not reprise her role as Queen Sarabi in Il re leone 2 - Il regno di Simba (1998). The directors felt that replacing her voice could be seen as disrespectful and inappropriate. Sinclair was survived by her second husband, Dean Compton; her two sons; her mother; and her sister.

She appeared as the unnamed Captain of the USS Saratoga in Rotta verso la Terra (1986), marking the first appearance, in any Star Trek series or movie, of a female starship Captain. She later guest starred on Star Trek: The Next Generation (1987) as Captain Silva La Forge, the mother of Geordi La Forge, played by LeVar Burton, one of her co-stars on the miniseries Radici (1977) -- in which Burton played the younger version Kunta Kinte and Sinclair played Bell Reynolds, wife of the older version of Kunta Kinte, played by John Amos (who was Sinclair's junior by 20 months).

She played Ben Vereen's grandmother in Radici (1977) and his wife on Star Trek: The Next Generation (1987).