|Above, the memorial marker for Elvis's twin brother at Graceland's Meditation Garden. Photo by Armand Vaquer.|
While looking for something else over at YouTube, a link popped up indicating that there's a video of the final resting place of Jessie Garon Presley, Elvis's stillborn twin brother, in Tupelo, Mississippi.
The grave is not "lost", it is unmarked. According to the video, the Presley family was so poor that they could not afford a casket for the infant. He was buried in a shoebox and everything is so deteriorated by now to allow him to be exhumed and moved to Graceland.
I watched the video and it features other places in Tupelo.