The shooting happened on Allison Street near Springfield Avenue in Southwest Philly, the same street where Sheed had lived with his grandmother and where he committed an armed robbery several years before, for which he was convicted and jailed.
Brown testified against Sheed at the trial while lying in a bed that was rolled into the courtroom by medical personnel.
"Marvin Brown is now confined to a gurney 24 hours a day and he courageously testified at trial from that gurney," read a statement released by the District Attorney's Office.
Despite Brown's testimony, Sheed and his family maintains that he is not the shooter and was not even at the scene.
Beverly Overton, Sheed's maternal grandmother, said the trial was rigged against her grandson.
"But God's will be done," she said. "We're going to appeal it. We're not going to let this go."
The lengthy sentence Judge Charles Cunningham handed down represents a steep drop from where Sheed stood in September 2002, when he turned in his brutal, drug-dealing father, Edward Sheed Sr.
After the 11-year-old boy recounted how he was forced to help his father sell drugs in North Philly and how his father once even gave him a gun, police arrested the father in a drug sting.
In 2004, the father called his son a liar when he was sentenced to 12 1/2 to 25 years in prison.
Plenty of people believed Sheed. While testifying against his father at a 2002 preliminary hearing, Sheed told the judge he knew the difference between telling the truth and telling a lie.
"He's an amazing little boy who's been through more than any child should ever, ever have to deal with," prosecutor Jennifer Pasquarella said at the time.
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