Freddie King was one of the "Three Kings of Blues" (B.B. King and Albert King). He like many other Blues artists influenced legendary artists such as Eric Clapton and Stevie Ray Vaughn. Unfortunately, Freddie King died of acute pancreatitis at the age of 42 in 1976.
Here's Freddie King's 1973 performance of "Have You Ever Loved A Woman" live in Sweden.
Also, check out the collar on that shirt! It's outstanding!
Rolling Stone also listed Freddie King at number 25 on their list of best guitarists. Here's exhibit A: