After a Wednesday conversation with Irish coach Brian Kelly, Nelson acted on it.
The 6-foot-5, 295-pound Nelson spoke with Kelly earlier Wednesday, thought things over during the next few minutes and called him back to commit.
Nelson then texted FOX Sports NEXT to say he committed to the Irish.
"That doesn't happen every day at Red Bank Catholic.," RBC coach Jim Portela said. "I know he was getting along well with other kids committed to Notre Dame. ...I think for most football players that go to a Catholic school, Notre Dame is a special place and has a mystique about it. He loved it ever since his visit."
Nelson, who projects as a tackle, is the second high-level offensive lineman to commit to the Irish in two weeks, and is the third offensive lineman in the 2014 class. Our Lady of Good Counsel (Olney, Md.) four-star offensive guard Sam Mustipher committed to the Irish a few weeks ago and told FOX Sports NEXT last week he was recruiting Nelson hard and hoped to have in on board shortly.
"He felt like he fit in the Notre Dame locker room and in that school," Portela said. "He just liked everything about it."
Nelson joins St. Ignatius (Cleveland) four-star prospect Jimmy Byrne as Notre Dame offensive tackle commits.
"He's a big kid, has great feet, real long arms," Portela said. "He works hard at it. He's a serious kid. He works hard in the classroom. He works hard in the weight room. He works hard on the football field.
"You put all that together with the size, strength and speed God has given him, and that gives you something."
Nelson can play right or left tackle in college.
"He can play either one," Portela said. "He's a road grater, he can pass protect. If they need a big powerful guy at right tackle and he can play there. He's 295 (pounds) and you'd never guess it because. He's got a flat belly, he's a lean kid and there's a lot of room to grow to put on meat and muscle."