Sterling K. Brown was finally able to grieve the death of his father after playing out a similar tragedy onscreen in ‘This Is Us’. The actor plays Randall Pearson in the hit show and viewers saw the character holding his biological father, William Hill (Ron Cephas Jones), as he passed away and he admitted the emotional moment finally helped him achieve closure because he didn’t get to say a final goodbye to his own dad when he was younger. He told the latest issue of Entertainment Weekly magazine: “I wasn’t able to be at the hospital (for my father’s death) because I was just 10 years old and …