At first, they laughed. Then they scoffed. Finally, they accused him of witchcraft. The Cherokee silversmith named Sequoyah had spent years scratching strange marks on paper. In 1821, his fellow tribespeople, disturbed by his obsession, put him on trial for practicing black magic. Sequoyah insisted his invention would allow Cherokee speakers to write out Iroquoian language for the first time. To test his claim, tribal elders ordered Sequoyah’s young daughter, Ayoka, to another room. Father and daughter separately made marks on paper and told their minders in each room what the marks said. Then the papers were exchanged. When each was able to read the other’s messages aloud, suspicion turned to wonder.

And not a single example to be found in the article

Johnny Cash actually has a song about this: https://www.youtube.com/watch?v=ls_SP7-G3g0