Here's a challenge:
Name a major historical/cultural figure who doesn't have a page on the Doctor Who Wiki
Examples I (didn't) find:
- Sacagawea
- Simón Bolívar
- Ho Chi Minh
- Emperor Hirohito
- Muhammad Ali
- Weird Al Yankovic
"Major figure" is obviously impossible to define. Try to think of people that would be mentioned in an English-language history textbook.
Try to avoid anyone who became a major figure in the 21st century. (e.g. Kanye West, Angela Merkel, Kim Jong Un) It's not that surprising if they haven't been mentioned in Doctor Who.