According to Carl H Claudy's Introduction to Freemasonry-II-Fellowcraft:
the Halliwell Manuscript (Regius Poem), dated 1390, invoked the Virgin Mary, speaks of the Trinity and gave instructions for observing Mass!
All these things are important to Roman Catholics of today. The reformation played an important part in the segregation of Masons to FREEMasons.
Most believe they are doing good for society ;)
As usual, @krnel. You are correct. As a Roman Catholic having been schooled by the Jesuit Order catechism, Catholicism brought mysticism and curiosity to my life. I was never afraid to learn about new things, including secret mystery teachings.