One of the possible heirs to the $300 million fortune left by Huguette Clark was discovered dead under a railroad pass in Wyoming.

Timothy Henry Gray, Clark's 60-year-old half great-nephew, was found by children who were sledding. He suffered from hypothermia in freezing temperatures. Foul play is not suspected in his death.

Clark, who died in 2011 at age 104, was the reclusive youngest daughter of Gilded Age railroad and copper mining tycoon William Andrews Clark.

Gray's siblings told the Associated Press that he disappeared after their mother died in 1990. He possibly would have inherited about $19 million from Clark's estate. Her fortune, which includes prime real estate, is valued at between $300-$400 million.

Long-lost relatives of Clark are laying claim to her estate after two sets of wills were discovered. In the last will, made six weeks after one that named them beneficiaries, the relatives were cut out completely.

Clark, who lived alone in a New York hospital for decades, had later stipulated that her $85 million Santa Barbara estate be made into a museum housing works by the likes of Sargent and Renoir.

Her revised will leaves out relatives and names other persons and institutions as her beneficiaries, including a museum foundation.

Controlled by Clark's accountant and attorney, who are reportedly under investigation, the Bellosguardo Foundation would oversee the new museum in her magnificent, 23-acre beachside mansion in Santa Barbara, called Bellosguardo, which was unoccupied for 60 years.

The legal battle over Clark's estate could be presented to a jury in 2013. Nineteen distant relatives of the seldom-seen New York recluse are contesting the second will although settlement talks have begun.