Interesting, if that's so then exactly 65 years minus 1 day after the first human to cross the sound barrier in an airplane, we have the first human to cross the sound barrier without airplane (yesterday)!
That depends on your definition of the term. On 25 January 1966, Bill Weaver was flying SR-71A 61-7952 / 2003 at a speed of Mach 3.2 when he experienced a severe case of engine unstart. Before he could tell his RSO, Jim Zwayer, not to eject until he regained control of the aircraft, the SR-71 disintegrated around him, leaving him in free fall at a speed in excess of Mach 3. His drogue chute deployed, stabilizing his fall, and his main chute deployed automatically. Weaver spotted his RSO's chute during his parachute descent; unfortunately, Zwayer had suffered a broken neck during the SR-71's disintegration and was dead before he landed. Weaver was uninjured.
In 1955, George Smith was flying an F-100 Super Sabre when the aircraft pitched into a dive and ceased responding to its controls, despite reducing the engine to idle and deploying speed brakes; he ejected from the plane at a speed of Mach 1.05. During the ejection, he experienced an acceleration of 40g, losing his shoes, socks, helmet, flight gloves, wristwatch, and ring, and had several panels blow out of his chute when it deployed due to his high speed. He was lucky to splash into the water 100 yards away from a fishing boat commanded by a former Navy Rescue Specialist. He was severely injured during the ejection, and was unconscious for days, with doctors holding out little hope for his recovery. Smith did, however, make a full recovery, and returned to flight status.
Baumgartner was the first person to deliberately exceed Mach 1 without an aircraft, but he was not the first person to exceed Mach 1 in free fall.