Episcopal = sort of a protestant, separated by a body of water from Rome.
Title sort of misleading.
He could have been a "low church" Piskie, which is indistinguishable from your average mainline protestant denomination.
He wasn't a "high church" Piskie, because in that case he wouldn't have had a problem with Mary to begin with. They've got Lady Chapels and Rosary Sodalities and devotions to the Immaculate Heart. My daughter was 14 when we converted, and she said she didn't notice much change . . . except that confirmation class was much better and the sermons were shorter.