Yes on this thread Magness and Warren sibling pears
This pretty much says it
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Geography/History
The history of Warren pears is filled with mystery, rumors, and a touch of whimsy. The first written record of the variety was featured in Pomona Magazine in 1986, claiming that Thomas O. Warren had discovered the Warren pear growing on a tree in a friend’s backyard in Hattiesburg, Mississippi, in 1976. Once the article was released, Warren began to tell a new story of how he found the fruit on a tree beside a post office and USDA soil conservation service office. This rumor remained the primary origin story for quite some time, and many growers in the present-day still retell this story as the pear’s true origins. At some point in the late 20th century, Warren was questioned about the validity of his post office discovery, leading Warren to change the story once again, saying he found the fruits at an old test site of Mississippi State University, where the pear variety magness was once planted. Magness pears were developed from the same cross as Warren pears, the American giant seckel pear and the European comice pear, leading many experts to believe the two pears were the same. Oregon State University eventually disproved this theory, deeming the two cultivars similar, sharing the same parents, but genetically different. Today Warren pears are available in limited quantities through specialty orchards across the United States."