Heinz Schwarz
... that Heinz Schwarz attended all CDU party conventions from the first ever in 1950 to 2020?
... that <b id="mwAQI"><a href="./Heinz_Schwarz" id="mwAQM" rel="mw:WikiLink" title="Heinz Schwarz">Heinz Schwarz</a></b> attended all <a href="./Christian_Democratic_Union_of_Germany" id="mwAQQ" rel="mw:WikiLink" title="Christian Democratic Union of Germany">CDU</a> party conventions from the first ever in 1950 to 2020?