"Ernest (24 March 1441 – 26 August 1486) was Elector of Saxony from 1464 to 1486.
Ernst was the founder and progenitor of the Ernestine line of Saxon princes, ...
and a direct patrilineal ancestor of Queen Elizabeth II (United Kingdom), Michael, Prince of Saxe-Weimar-Eisenach (Saxe-Weimar-Eisenach), Konrad, Prince of Saxe-Meiningen (Saxe-Meiningen) and Andreas, Prince of Saxe-Coburg and Gotha (Saxe-Coburg and Gotha)." - (en.wikipedia.org 01.02.2020)
