To celebrate the 175th birthday of Stateside Catholicism's home-grown "pontifex maximus," the 15th archbishop of Baltimore led a noontime Mass Thursday in the cathedral church where James Gibbons was baptized and said his first Mass, was made a bishop and installed as head of the nation's "Premier See," where he received the red hat and, after 44 years as the faith's "unchallenged" face and voice on these shores, was laid to rest.