Andronikos IV Palaiologos

Andronikos IV Palaiologos or Andronicus IV Palaeologus was the eldest son of Byzantine Emperor John V Palaiologos. Appointed co-emperor from 1352, he had a troubled relationship with his father: he launched a failed rebellion in 1373, usurped the throne in 1376–1379, and remained engaged in a bitter struggle with John V until his death in 1385. This civil war depleted Byzantium's scarce resources and greatly facilitated the Ottoman conquest of the Balkans, most notably through the cession of Gallipoli by Andronikos. He was also the father of John VII.

11 April 1348

Born on the same birth day (11 April): Allan Théo • Ana María Polo • Dean Acheson • Gerry Baker • Ian Redmond • John Montagu, 11th Earl of Sandwich • Kotomitsuki Keiji • Lisa Stansfield • Michael von Grünigen • Oliver Riedel • Peter Barfuß • Sergei Lukyanenko • William Wallace Campbell