"Francis of Brunswick-Lüneburg (1508–1549) was the youngest son of Henry the Middle. Following a thirty-year joint reign of Brunswick-Lüneburg with his brother Ernest the Confessor, he ruled the newly founded Duchy of Gifhorn from Gifhorn Castle for over 10 years from 1539 until his death in 1549. He was given the duchy as an inheritance settlement by his brother Ernest." - (en.wikipedia.org 29.10.2020)
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