- The project: http://www.sixdegreesoffrancisbacon.com/
- Introductory video: https://www.youtube.com/watch?v=41_DQQii628&feature=youtu.be
I don't think there is a time-inflected view, but it seems you can choose earliest and latest dates for the people you are interested in.
And, importantly, there is a level-of-confidence selector, so you can choose whether to look only at certainly documented relationships or those that are less sure. If only more historic visualisations were honest about uncertainty!