Gabriel Marcel’s thought is deeply informed by the American philosophical tradition. Marcel’s earliest work focused upon the idealism of Josiah Royce. By the time Marcel completed his Royce writings, he had moved beyond idealism and adopted a form of metaphysical realism attributed to William Ernest Hocking. Marcel also developed a longstanding relationship with the American philosopher Henry Bugbee. These important philosophical relationships will be examined through the Marcellian themes of ontological exigence, intersubjective being, and secondary reflection. Marcel’s relationships with these philosophers are not serendipitous. They are expressions of Marcel’s deep Christian faith.