Biografia

She played LeVar Burton's mother in four different productions: Almos' a Man (1977), One in a Million: The Ron LeFlore Story (1978), Jim Jones: A Tragédia da Guyana (1980) and the Jornada nas Estrelas: A Nova Geração (1987) episode Interface (1993). She also played his character Kunta Kinte's wife Bell Reynolds in Raízes (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 Um Príncipe em Nova York (1988), then in O Rei Leão (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 O Rei Leão 2: O Reino de 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 Jornada nas Estrelas IV: A Volta para Casa (1986), marking the first appearance, in any Star Trek series or movie, of a female starship Captain. She later guest starred on Jornada nas Estrelas: A Nova Geração (1987) as Captain Silva La Forge, the mother of Geordi La Forge, played by LeVar Burton, one of her co-stars on the miniseries Raízes (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 Raízes (1977) and his wife on Jornada nas Estrelas: A Nova Geração (1987).