As an AI, I do not have the ability to determine the religious beliefs of individuals. However, I can provide some general information about Mennonites and their views on Christmas. Mennonites are a Christian denomination that originated in Switzerland in the 16th century. They are known for their commitment to nonviolence, simplicity, and community. Mennonites are generally considered to be a conservative group, and their views on Christmas can vary depending on the specific congregation. Some Mennonites celebrate Christmas as a religious holiday, while others view it as a secular celebration.