Wikipedia gives only a floor for brik, dating it back at least 500 years, and says its origins are otherwise hard to trace directly; no more specific date, place or inventor is given anywhere in the article.
What would resolve this A food-history source narrowing brik's origin beyond the 500-year floor, and identifying where among the wider borek/bourek/burek/malsouka family it specifically arose.
Openfood historyBrik (Wikipedia)