User blog comment:Stormwell/Timeline of Events/@comment-3525200-20140212091841/@comment-16533050-20140213035106

They have new info regarding the ages of certain characters by Steve Harvey. At the time of the events of the story Daud is 42, Corvo is 39, Billie Lurk is 24.

Also, Treavor is approx. 40, Martin is in his early 40s (40-42 I'd say), and Havelock is in his early 50s (50-52 I'd guess).

Hope that helps... :)