Complex sentence: The character has his performance origins in the year 1560 with the actor Lucio Burchiella; two other mentions follow soon after, with a pair of "vecchi" being mentioned in the year 1565, and another mention of "Dottore Gracian" in 1574.
Split into simpler sentences: The character has his performance origins in the year 1560 with the actor Lucio Burchiella. Two other mentions follow soon after, with a pair of vecchi being mentioned in the year 1565, and another mention of Dottore Gracian in 1574.