Their initial meeting was back in middle school.
"We've been rivals ever since," Johnson told CUTigers after Williams' commitment ceremony at Lake Marion High School.
The rivalry has been forged over the last several years. But it didn't take nearly that long before it became friendly.
"I started talking to my momma about him. I actually found out that he was my cousin," Johnson said.
They've grown closer over the years, but the relationship was put to the test over the last several months as Williams mulled over his offers from Clemson and South Carolina.
Johnson, who's been committed to Clemson since early March, stayed in Williams' ear.
"Every day I was texting him, calling him, telling him to make that decision, ‘Pick that orange and white.' It worked out," Johnson said.
Fortunately, for Johnson and everyone else who aligns themselves with the orange and white, it worked out. But Johnson had to wait until Tuesday afternoon's announcement ceremony to know for sure.
"He wouldn't tell me, but I kind of knew he was going to choose," Johnson said.
The three-star safety is happy to have another four-star wide receiver with him in the Tigers' class of 2013.
"I'm happy. I'm happy for him. I'm happy for the whole Clemson family," Johnson said. "I'm just happy that he wants to go down in history with us."
Old rivals to team up at Clemson
CUTigers.com Top Stories
3-22 RECRUITING RADARIn our weekly Recruiting Radar, CUTigers Recruiting Analyst Gary McDaniel updates you on the latest news and intel on the Clemson recruiting front!
CUTigers.comWednesday at 11:14 AM
TIGERS TEE OFF ON C OF CRed-hot ACC Player of the Week Chris Williams hit his 4th and 5th home runs in 8 days and Beer and Davidson also went yard, as #6 Clemson won its 16th of the last 18 games.
CUTigers.comTuesday at 7:48 PM
BROWNELL REMAINS AT CLEMSONDespite widespread speculation about Brad Brownell's job security after a disappointing season, he will remain at Clemson for at least one more season.
CUTigers.comMonday at 10:08 AM
TIGERS TAKE SERIES!!!Pat Krall allows just one run and #9 Clemson slugs its way to its 15th win in the last 17 games, taking 2 of 3 from #11 UVA!
CUTigers.comSunday at 4:31 PM