Donald Duncan by Cole Nahlik By jenniferbaker Jun 6, 1892 Donald Duncan was born on june 6 1892. Period: Jun 6, 1892 to May 15, 1971 Donald Duncan Apr 21, 1920 Pedro Flores made the first ever yoyo Jan 1, 1930 yoyo became popular in 1930. Apr 16, 1930 Donald bought a yoyo company from Pedro Flores. Jun 6, 1932 National yoyo day on his birthday. Apr 21, 1950 duncan made the butterfly that made tricks easier. Apr 16, 1962 Donald sued Royal and Dell over the use of the word yoyo. Apr 16, 1965 Duncan trademarked the name yoyo. May 15, 1971 Duncan died on May 15 1971. Feb 13, 2011 Donald got in the toy industry hall of fame for his yoyos.