Complex sentence: In 1852, at the age of twenty-six, Mr. Brace was serving as a Methodist minister, he decided he wanted to fulfill his humanitarian efforts in the streets rather than in church.
Split into simpler sentences: In 1852, at the age of twenty-six, Mr. Brace was serving as a Methodist minister. While serving in the ministry, Mr. Brace decided he wanted to fulfill his humanitarian efforts in the streets rather than in church.