Ambroise Francois Germain Sophie Germains Father. He had many political discussions at his house and was very liberal.
Archimedes Germain learned about Archimedes in a book and decided he would be her role model.
Adrien Marie Legendre After reading one of his books, Germain and Legendre started a correspondence that lasted years and was very helpful to both.
Carl Friedrich Gauss The most famous of Germains friends. She worked on mathematical problems with him for years. She also saved his life during a battle in Germany. For many years he thought she was a man because she hid her true identity from him.