Hadrie could refer to one of several things:
The Roman Emperor Hadrian (A.D. 117-138) who built the famous Hadrian's Wall in England and violently put down the Simon bar Kochba Rebellion, effectively eliminating Israel.
The Adriatic Sea which separates Italy in the east from the nations of Former Yugoslavia.
The word Hadrie, Adrian, or Adriatic is found in Quatrains 1-8, 1-9, 2-55, 2-86, 3-11, 3-21, 3-23, and 10-38
In his language, Hadrie is rendered Hadrie, qu'Hadrie, d'Hadrie, and Hadriatique
Hadrian was born in Spain, so Hadrie as a person may be someone who is Roman and Spanish. Hadrie may also refer to someone from the Adriatic coast or it could be an anagram. It is frequently in quotation marks or left untranslated, demonstrating how dificult it is to interpret.