Here's something that doesn't happen every day...

From the Daily News:

The 153-year-old tombstone of famed abolitionist Wilson Rantus has mysteriously turned up in the backyard of a Queens College professor’s home, The News has learned.

Allan and Elaine Ludman returned from Peru last month to find the 200-pound marble slab in the backyard of their Flushing home — more than 150 years after the headstone was planted at Rantus’ one-time family estate a mile away.

“This is a piece of history that has to be preserved,” said Allan Ludman, a professor at the school’s Department of Earth and Environmental Science, who said he was puzzled why someone hauled the headstone over his 4-foot fence.

Rantus was buried in a family plot near Queens College until 1952, when his remains were moved to Evergreens Cemetery in Brooklyn after descendants sold the property.

Evergreens historian Donato Daddario said Rantus and his family appear to be buried in an unmarked grave at the cemetery, but on Monday that plot had not been identified.

The Ludmans have been keeping the stone secure in their home while seeking out historians to help them restore it and return the slab to a proper, dignified burial site.