Final answer:
William Stokoe is the individual known for his pivotal role in recognizing American Sign Language as a legitimate language, contributing to ASL Poetry and Linguistics.
Step-by-step explanation:
The person known for his curiosity and drive to study his language, contributing significantly to ASL Poetry and Linguistics, is William Stokoe. William Stokoe was a scholar and linguist who recognized American Sign Language (ASL) as a legitimate language with its syntax and grammar. His research and publications helped establish ASL as a recognized field of study at universities and contributed to the broader acceptance of sign languages globally. His work contrasts with figures like Alexander Graham Bell, who advocated for oral education approaches and was not supportive of sign language use.