It is possible that:
* The name is misspelled. If you could double-check the spelling, I might be able to find something.
* The author uses a different name. Maybe they have a pen name or publish under a different variation of their name.
* The author is not well-known. Many authors, especially those writing in specific genres or niches, may not have a large online presence.
Could you provide any additional context or information?
For example:
* What genre did they write in?
* What time period were their books published?
* Do you have any specific titles you are interested in?
With more information, I may be able to help you find out more about Ellsworth Gage Lancaster.