Thomas W. Silloway (August 7, 1828 - May 17, 1910) was an American architect, known for building over 400 church buildings in the eastern United States.Thomas William Silloway was born in Newburyport, Massachusetts and raised a Methodist by his parents, Susan Stone Silloway and Thomas Silloway, Sr., a coppersmith. As a teenager, Silloway apprenticed to a housewright and as a clerk in an East India merchant store. In 1844 Silloway became a Universalist.