Short answers, pulled from the story.
Ed White became the first American to walk in space on the 3rd of June 1965, during the Gemini 4 mission. He exited the spacecraft at 19:46 UTC and used an oxygen-propelled Hand-Held Maneuvering Unit to move about outside the capsule.
Ed White died on the 27th of January 1967, in the Apollo 1 fire at Cape Kennedy, alongside Gus Grissom and Roger Chaffee. The crew was conducting a "plugs-out" pre-launch test when fire broke out in the pure oxygen-filled cabin at 18:31; all three men were killed by asphyxiation, smoke inhalation, and thermal burns.
Investigators determined the fire was ignited by a spark from a wire under Gus Grissom's seat on the far left of the spacecraft. Contributing factors included the 100% oxygen pre-launch atmosphere, numerous wiring and plumbing flaws, flammable materials in the cockpit and flight suits, and a hatch design that could not be opened quickly in an emergency.
Ed White is buried with full military honors at West Point Cemetery. NASA officials initially pressured his widow Patricia to allow burial at Arlington National Cemetery, but astronaut Frank Borman intervened and the family's wishes prevailed.
The Omega Speedmaster reference 105.003 is known as the "Ed White" because White wore that specific model during his Gemini 4 spacewalk on the 3rd of June 1965. The Speedmaster remains the only watch NASA has qualified for EVA use.
After Gemini 4, White received the NASA Exceptional Service Medal, presented by President Lyndon B. Johnson at the White House. He also received the 1965 General Thomas D. White National Defense Award for his spacewalk, and was posthumously awarded the Congressional Space Medal of Honor, which President Clinton presented to his family in 1997.