![Dr. Bill O'Hanlon, Ed.D.](https://marquistopeducators.com/wp-content/uploads/2022/03/OHanlon-Bill-5076418_4005076418-TP-WEB-CONT.jpg)
Dr. Bill O’Hanlon, Ed.D.
Title: Assistant Principal Company: Brandywine High School Location: Wilmington, Delaware, United States
Title: Assistant Principal Company: Brandywine High School Location: Wilmington, Delaware, United States
Marquis Who’s Who was established in 1898 and promptly began publishing biographical data in 1899. More than 125 years ago, our founder, Albert Nelson Marquis, established a standard of excellence with the first publication of Who’s Who in America.