IS JANE SEYMOUR THE ACTRESS MORMON?

No. Jane Seymour is not a member of the Church of Jesus Christ of Latter-day Saints (the "Mormon" church). Her father is of Jewish heritage and her mother was a Dutch Protestant. While she is not a Mormon, she did narrate the Mormon Tabernacle Choir's Christmas Special in 2011 (released on DVD in 2012), so it is safe to assume that she is not anti-Mormon.