My mission was to find an erotic romance author older than Desiree Holt (76). Well, I still haven't done it and may have to concede that she gets the title.... But honorable mention goes to (non-erotic) romance author Ida Pollock, who is 105 and still writing. She is the author of 124 titles. It is hard to tell what is the more recent book given how many have been re-issued and her plethora of pen names. Her upcoming title is said to be called "Runaway".