Mariah Nichols
D4EO Literary Agency
Likely Closed
Updated: 1/30/2026
Should You Query This Agent?
1.
Agent Information
Agent Bio
Mariah has a great passion for storytelling and for the publishing industry.
With a BS degree in Business she wanted to apply her degree towards the world of books.
After interning at Howland Literary her senior year, she soon transitioned to the role as a reader and in-house editor for the D4EO Literary Agency, working with Bob Diforio in all aspects of the business, with the intention of being named a D4EO literary agent.
She enjoys working with new authors, offering editorial suggestions and copy editing of their manuscripts, helping to ensure that the work submitted to publishers is the best it can be.
She is actively seeking compelling stories and growing her client list.
Research Links
2.
Submission Requirements
Fiction Requirements
Nonfiction Requirements
3.
Genres
Genres Represented
Fiction
- Romantic Comedy
- Romance
- Science Fiction
- Thrillers
- Upmarket Fiction
- Women's Fiction
Nonfiction
- Cookbooks
- How-To
- Lifestyle
- Memoirs
- Self-Help
Genres Not Represented
None listed or not available
4.
About D4EO Literary Agency
Agency Profile
D4EO is a full-service, multi-agent literary agency representing authors of a very broad range of commercial fiction and non-fiction for children, young adults, and adults.
Agency Links
5.
Other Agents At D4EO Literary Agency (8 Total)
Agent requirements, submission statuses, and other information can change without notice and are often subject to interpretation. The user should always review the agent's official website before submitting or determining whether to submit. This listing and determination of suitabilitty for querying are provided for informational purposes and does not constitute an endorsement. We're rooting for you—good luck!