Jayadeva birth controversy
The birthplace of the twelfth-century Sanskrit poet Jayadeva, author of the Gitagovinda, has been disputed, with the neighboring states of Odisha, West Bengal and the region of Mithila in the state of Bihar staking a claim. This had led to a bitter feud between people on both sides that lasted for over a century.
Source: Wikipedia — Jayadeva birth controversy (CC BY-SA 4.0)