Maury Ginsberg

From Memory Alpha, the free Star Trek reference

Maury Ginsberg was a spotlight operator at the famous Woodstock music festival in New York on Earth in 1969. He hitched a lift to the concert and noticed a disconnected cable that could have ruined the concert. He was not aware that the man who drove him there was the member of the Q Continuum later known as Quinn.

Following the concert, Ginsberg would go on to meet his future wife, a "groovy chick with [the] long red beads" that was in the backseat of Quinn's jeep. He would then go on to become a successful orthodontist, settle in Scarsdale, and have four kids.

Ginsberg was brought aboard the USS Voyager by Q in 2372 along with Sir Isaac Newton and William T. Riker to provide evidence of Quinn's influence on history. He was returned shortly afterwards with no memory of this. (VOY: "Death Wish")