Occasionally, one can find a biography of a political person, sometimes flawed, in a website called Political Graveyard. This is especially true of US Congressmen [and perhaps women, if the bio is somewhat current]. Chief Justice Marshall MUST appear in some website. Do watch out for the biography, note its source, and try to prove any ancestry which is given for the subject person. In one instance, while I was searching for a particular Williams male, the biography only told me he was a cousin of another Williams male, but the parent(s) of neither man was given!!!! Back to Square one!! Do a google.com search for Political Graveyard and then use your find button to locate the name(s) you seek. It is a work in progress. If you find the website useful, tell others. If it is too seriously flawed, don't tell others!! E.W.Wallace