Intellectual property question: If I attend a lecture on an historical figure, takes notes and

[zonkers]

use those notes generally as components in a published manuscript which contained many other facts, can I get in trouble legally? Let's say the historical figure lived a hundred years and the notes I took contained info like where he worked, when he worked there and events that took place during his time working there. I mean, if these are facts that the lecturer found out by doing research -- facts he he did not create but found out somewhere else, does it still count as intellectual property infringment?