Burchard von Zollern[?] was born before 1025 and died in 1061.
Burchard's son was Friedrich von Zollern[?], born before 1055, died 1114/15 .
... Italian jet pioneer November 30 - Clyfford Still, painter Deaths: January 20 - Dmitri Ivanovich Mendeleev, Russian chemist and inventor of the Periodic table ...