* The name is very uncommon: This makes it unlikely that there's a well-known artist with that name.
* "D" could stand for anything: It could be a first initial, a nickname, or even a typo.
* "Motley" could be misspelled: There are many variations of spellings, such as Motley, Mottley, or even something else entirely.
To help me find out, please provide more context:
* What kind of painting are you interested in? (e.g., oil paintings, watercolors, abstract art)
* Do you have any other details about the painter? (e.g., approximate time period, location, style, any specific artwork)
* Where did you hear this name? (e.g., a book, an auction, a family story)
With more information, I might be able to help you track down this painter.