 McCay 's son Robert married Theresa " Tedda " Munchausen on April 9 , 1921 . McCay bought them a nearby house as a wedding gift . The couple gave McCay two more grandchildren : Janet ( named after McCay 's mother ) in 1922 , and Robert in 1928 . Robert suffered shell shock during World War I , and following the war had difficulty drawing . McCay tried to boost his son 's confidence by finding him cartooning work , and some of the elder McCay 's editorial cartoons were signed " Robert Winsor McCay , Jr . " 
