It discusses the Catholic origins of the 1st Thanksgiving in America - 1565* in San Augustine, Florida.
http://www.kofc.org/en/news-room/articles/the-first-real-thanksgiving.html
![https://www.history.com/.image/c_limit%2Ccs_srgb%2Cq_auto:good%2Cw_600/MTU5NTM4MTkzMTAyODA4NjY0/hith-florida-thanksgiving-mass-pc3604.webp](https://www.history.com/.image/c_limit%2Ccs_srgb%2Cq_auto:good%2Cw_600/MTU5NTM4MTkzMTAyODA4NjY0/hith-florida-thanksgiving-mass-pc3604.webp)
Photo from History.com (courtesy of State Archives of Florida/Florida Memory)
* There is also another account of a 1st Thanksgiving occurring in Colorado with the Spanish Conquistadors in 1541:
https://catholicism.org/first-thanksgiving.html