[1] He was described by English professor Christopher N. Philipps as a "kind of American counterpart to John Newton.
"[1] In 1953, he was described by Lewis Leary in The Pennsylvania Magazine of History and Biography as "one of America's most prolific authors during the first two decades of the nineteenth century.
[3] After converting to Methodism,[1] he became morally opposed to slavery[3] and decided to leave his position to become a preacher.
[3] Branagan wrote extensively on the topic of the evil of slavery, producing six works on the subject from 1804 to 1810.
[2] In or around 1807, he argued that a black settlement should be created in the Louisiana Purchase territories, which would promote emancipation of slaves while "saving white society" from dangers he believed would occur in a biracial society.