An Orlando man was the second to be sentenced to life in prison this week for the murder of a Umatilla man three years ago. Marvin Ellison Jr., 41, was found guilty of first-degree murder Thursday by jurors after trial for his involvement in the 2022 death of 31-year-old Antwain Jamar Hart. After his conviction, Judge James R. Baxley sentenced Ellison to life in the Florida Department of Corrections…