He is!
He actually didn't know how to read or write, yet he made a syllabary for his people. Even though it took many years, his repetition and skill of never giving up (even when his tribe looked at him weird because he wasn't doing any work) propelled him to success :D
And his daughter helped him!
Sequoyah was able to convince the tribe to use the syllabary by having his daughter read what he wrote with it!
Very awesomesauce :D