We are in Mini Unit 5, part 1 and it says "Learn the people in the story: Constantine, Attila the Hun, St.Benedict, St. Augustine"

I did not see any of these people in any of the books listed for this week, could someone help me out? I was especially excited to read about Constantine with my children after having read the Guidebook for this week, but now I am confused. Please help!

Thank you, Mellissa