Rod wants to know if it’s really true that a Catholic can marry a Wiccan

Yep. As our pals Greg Popcak and Pete Vere make clear, from the Church’s perspective it’s just another mixed marriage provided the canonical ducks are in a row. It is worth noting that St. Monica was married to a pagan too and her kid turned out okay (and her husband eventually converted, if memory serves). Still, it’s not what I would recommend for the reasons Greg and Pete give, but it certainly doesn’t mean the Church in Wheeling is off its rocker in allowing it in theory.