Betsy Ross is credited with sewing the first American flag in 1776 from her home in Philadelphia, while the colonies were still under British rule.
https://www.foxnews.com/lifestyle/story-behind-betsy-ross-first-american-flag-america-celebrates-250th-birthday
https://www.foxnews.com/lifestyle/story-behind-betsy-ross-first-american-flag-america-celebrates-250th-birthday