Frederick Francis Mitchell, born Frederick Francis Yapp, was an American right-handed pitcher, catcher, first baseman and manager in Major League Baseball. Mitchell was born in Cambridge, Massachusetts as Frederick Francis Yapp, although he went by Mitchell.

Charles Henry Weeghman was a German American restaurant entrepreneur and sports executive. Beginning in 1901, he began opening quick-service lunch counters throughout downtown Chicago. After failing to acquire the St. Louis Cardinals baseball club in 1911, he became one of the founders of the upstart Federal League in 1913 as the owner of the Chicago Whales. In 1914, he built the baseball stadium that would later be known as Wrigley Field.