Short answers, pulled from the story.
Traveller was first owned by James W. Johnston, near whose property the horse was born in 1857 at Blue Sulphur Springs in Greenbrier County, Virginia. Captain Joseph M. Broun of the 3rd Regiment, Wise Legion, purchased him for $175 in 1861 and renamed him Greenbrier. Broun then sold the horse to Lee for $200 in February 1862.
Traveller was an American Saddlebred, sired by the Thoroughbred racehorse Grey Eagle. He was iron gray in color with black point coloration, a long mane, and a flowing tail, weighing 1100 lbs as an adult.
Traveller stepped on a nail in 1871, shortly after Robert E. Lee's death in 1870, and developed tetanus. Because there was no cure, he was shot to relieve his suffering.
Traveller's remains are buried in a wooden box encased in concrete beside the University Chapel on the Washington and Lee University campus in Lexington, Virginia. The burial site is a few feet from the Lee family crypt, where Robert E. Lee is interred. The burial was completed in 1971 after the bones had been displayed and stored at several locations since the 1870s.
After Traveller was buried behind the college buildings, unknown persons unearthed his remains and his bones were bleached for exhibition in Rochester, New York in 1875 and 1876. In 1907, Richmond journalist Joseph Bryan paid to have the skeleton mounted and returned to Washington and Lee University, where it was displayed and periodically vandalized by students. In 1929 the bones were moved to the University Chapel basement and remained there for thirty years before being permanently interred in 1971.
Traveller was originally named Jeff Davis at birth. When Captain Joseph M. Broun purchased him in 1861, he renamed the horse Greenbrier. Robert E. Lee gave him the name Traveller after buying him in February 1862.