After he was officially signed by the team, he posted an image of himself signing his deal, wearing a Redskins cap, with the caption: 'Blessed to officially be apart of the @Redskins organization!'
His signing by no means confirms Marley as an NFL talent, though. He faces a real battle to make the Redskins squad when the season begins in September, with their current 90-man roster needing to be cut to 53 in time for the start of the campaign.
It is not unheard of for undrafted free agents to make the team and have long careers in the NFL, with Kurt Warner, Willie Brown and Warren Moon all reaching the Hall of Fame despite being passed over in the draft, but it is a battle most do not win.
But if Marley does become a fixture in the NFL, he would like to do so on his own merit, rather than relying on his family name.
"I always wanted to make something for myself,' he said during a Sports Illustrated interview in 2014.
"I've never said, 'I'm gonna do it like my dad did it,' or 'I want to be like my grandfather'."
"Every individual is supposed to have something he wants to go get, something he wants so bad he don't need anybody's help. That's what I get from my father and grandfather."