My mother writes under two names, and I don't see it as deception at all - at least in her case. It delineates her work.
She publishes her children's books under her married name because she started writing for kids before her divorce, and it would have been incredibly stupid to change her name mid-series or something.
Now that she is also writing novels for adults, she is using her maiden name. Also, a lot of her profiles online from publishers, as well as the inside of her novel list her books written under both names. She's not hiding or deceiving. She just had a very unique married (and at that point, legal) name that she's sticking with for the kids stuff, and a less silly-sounding maiden (and at this point, legal) name for other endeavors.
