Complex sentence: Architect B. Stanley Simmons (1872--1931) was born in Charles County, Maryland in 1872, but came to Washington, DC as a child where he later established his career in architecture.
Split into simpler sentences: Architect B. Stanley Simmons (1872--1931) was an American architect. He was born in Charles County, Maryland in 1872, but came to Washington, DC as a child where he later established his career in architecture.