The Quick and the Dead . . .

American Queen, like my current project on Francis Marion, has as its subject a long deceased person. My other endeavors have been about people who, though deceased at the time of publication, had living family and friends (Jean Arthur; An All-American Murder). I believe that writing about the long-dead is harder work (sources are more obscure and the primary sources are documents that most be located, with many "black holes,"), whereas writing about the living, or recently departed people with living friends/relatives, is both more interesting in some ways (you get to interview actual people), but also more stressful (one must constantly take into consideration peoples' feelings, emotions, and privacy). I guess I like to switch back and forth between the two modes a bit. What do other writers think?