Thanksgiving Is A Catholic Holiday!
Here's a link to an article describing the real events of the second Thanksgiving. We often think of Thanksgiving as a pilgrim/puritan holiday but it looks like Squanto Crossed the Tiber before the Puritans could get to him! Read here to learn about the first real Thanksgiving in the New World which occurred 50 some years before the Puritans came to Plymouth Rock.
Also, the Greek word Eucharist means Thanksgiving, referring to when Jesus took the bread in his hands and gave thanks and broke the bread and said "This is my body."