Willaim Jones, as seen in a portrait. William Jones (1675 – 3 July 1749) was the first person to ever use the number pi in the year 1706. He was Walesh. Retrieved from "https://threepointfourteen.fandom.com/wiki/William_Jones?oldid=4776" Categories: Humans Welsh People William Jones GREAT! Gruffalo NumberFanagram characters Leaf Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.