Iselin disease

William Jay (February 12, 1841 – March 28, 1915) was a soldier and a lawyer. Born to parents John Jay and Eleanor Kingsland, he served in the Union Army as a lieutenant colonel during the American Civil War. [Source: Wikipedia ]

Synonyms
Osteonecrosis of the fifth metatarsal base
Is A
Site-specific avascular necrosis
Osteonecrosis of the fifth metatarsal base