On Holy Thursday, a solemn day in the most sacred week in the Catholic calendar, St. Miriam's felt like any other Catholic church: The altar featured a crucifix draped with white fabric and a tabernacle, and the Rev. James St. George, also known as Father Jim, was preparing the Flourtown church for a foot-washing ceremony, with towels and washbasins placed on the altar.
But St. Miriam's is not Roman Catholic, nor affiliated with the Vatican: It's catholic — with a lowercase c.
It's one of at least four independent Catholic parishes that cropped up around Philadelphia between 2005 and 2010, nourished in part by the advantages of social media and email. Now with more than 600 parishioners, St. Miriam's has become perhaps the largest such congregation; like the others, drawing Catholics eager for new ways to practice an old faith.