Who is the one white person who knows about Ruth's pregnancy

In "The Color of Water" by James McBride, the one white person who knows about Ruth's pregnancy is her employer, a Jewish man named Mr. Steinberg. Ruth worked as a typist for Mr. Steinberg, and when she became pregnant with her first child, he was the only white person she told about it. Mr. Steinberg was understanding and supportive of Ruth, and helped her to keep her job and continue working throughout her pregnancy.