Of the presidents who have served since the Order's founding in 1894, seven presidents – William McKinley, William Howard Taft, Woodrow Wilson, Franklin Roosevelt, Bill Clinton, Barack Obama, and Donald Trump – have been ineligible for both veteran and hereditary companionship as they are not known to have had qualifying ancestors. (All of them, except Wilson and Trump, did have ancestors who served as soldiers during the American Revolution; however, none of their ancestors has been proven to have been an officer.)