In the comic story `` The Family Tree Spree '' ( 1962 ) , Donald discovers that his only notable ancestors are Columbust Duck , who tried to prove the Flat Earth model , and Deadeye Dick , a stagecoach robber .
In the comic story `` The Family Tree Spree '' ( 1962 ) , Donald discovers that he has only two notable ancestors . One is Columbust Duck , who tried to prove the Flat Earth model .