How did the English colony bring Roman Catholicism in United States?

Answer 1

It didn’t as there is no such thing as "Roman Catholicism" It’s just Catholic, not Roman Catholic. Roman is an epithet first commonly used in England after the protestant revolt to describe the Catholic Church. It is never used by the official Catholic Church. The Catholic religion was brought to Maryland by George Calvert, the first Lord Baltimore, and his son.

from "Catholic Answers Magazine" article entitled: "America’s Catholic Colony"

The history of Colonial England in America is one of great irony: The same Protestant groups who fled England in pursuit of toleration and religious liberty brought with them an utter hatred for the Church. They installed laws and customs that excluded Catholics from all aspects of public life for over a century and a half.

This reality makes the story of Catholics in the first days of Maryland all the more remarkable. From its founding, Maryland was intended to be a place where Catholics were welcomed and permitted to share in the dream of a new life which brought so many others to America. What happened to the Catholics who pursued that dream is a reminder that the freedoms we take for granted today were hard-won by those who came before us.

Credit for the Catholic colony belongs to one man: George Calvert, First Lord Baltimore. A talented English business leader and a friend to Kings James I and Charles I, Calvert in 1624 converted to Catholicism. The decision cost him his seat in Parliament and his state office, but he resigned them willingly because he believed so firmly in the truths of the Church. His winning personality also helped him retain favor at the royal court. This proved crucial, as Calvert soon felt the harsh penal laws against Catholics and he committed himself to aiding his fellow believers. One of those ways was through a colony in the New World.

While historians are of differing opinions as to whether Calvert was concerned first and foremost with a commercial enterprise or with a sanctuary for Catholics, the idea of a colony for Catholics soon took shape. The first chosen site was in Newfoundland, but this proved financially impractical (and the winter utterly intolerable). Ironically, too, the fledgling colony was attacked by the nearby Catholic French. Virginia was the next possibility, but the furious resistance of the Protestants blocked the scheme. Undaunted, Calvert petitioned for a charter to start a colony north of Virginia, but he died in April 1632. A few months later, on June 20, 1632, a charter for the Maryland Colony was granted to his son, Caecilius (or Cecil) Calvert, Second Lord Baltimore. The colony was named in honor of Charles I’s queen, Henrietta Maria.