Friedrich IV, Landgrave of Thuringia
From Infogalactic: the planetary knowledge core
Lua error in package.lua at line 80: module 'strict' not found. Friedrich IV or Friedrich IV der Friedfertige was Landgrave of Thuringia (1406–1440).
Friedrich superseded Balthasar (1349–1406) and preceded Friedrich V der Sanftmütige (1440–1445).
See also
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