Gregory Sierra (January 25, 1937 – January 4, 2021) was a distinguished American actor, celebrated for his versatility and powerful presence on both television and film. Born on January 25, 1937, in New York City's Spanish Harlem, Sierra was of Puerto Rican descent and faced a challenging upbringing after being abandoned by his parents and raised by an aunt. Despite his early hardships, he found a path to acting after impressing at an impromptu audition for an acting school in Manhattan. Sierra's career began on stage, notably with the Nationa…