Families series, Part 1
So, most everyone knows that Arthur Miller was married to Marilyn Monroe. After their divorce and her death, he married Inge Morath and they had a daughter, Rebecca Miller, and a son (who has Downs Syndrome). Arthur Miller worked with Daniel Day-Lewis on a film version of The Crucible and Day-Lewis met Rebecca Miller. They eventually got married and now have two kids. R. Miller directed Day-Lewis in the film The Ballad of Jack and Rose, a film [spoiler!] about an incestuous relationship between the father and the daughter, among other relationships (trailer here).