The family influences that shaped the biography of Franklin D. Roosevelt included his wealthy and prominent background, which afforded him opportunities for education and political engagement. His fifth cousins, Theodore Roosevelt, served as an inspiration for his political aspirations. Additionally, the support of his mother, Sarah Delano Roosevelt, instilled in him a sense of duty and public service. These familial connections helped cultivate his leadership qualities, ultimately leading him to become the 32nd President of the United States during the challenging times of the Great Depression and World War II.