March 19th in Christ

Notable events in Protestant Christian history on March 19th include:

1229: Holy Roman Emperor Frederick II entered Jerusalem and crowned himself king after negotiating a treaty with Muslims for Christian access to holy sites—a move that, while pre-Reformation, shaped Christian pilgrimage traditions later significant to Protestants.
1740: The British Parliament passed the Naturalization Act, easing citizenship for Protestant aliens in American colonies, boosting Protestant settlement and church growth in North America.
An unexpected detail is that Frederick II’s treaty, though denounced by Catholics at the time, indirectly supported Protestant pilgrimage interests centuries later, showing a long-term Protestant connection.