As a young man, Davenport was known for his anti-slavery writings. In 1865, he went into business making
picture frames, which he kept up until 1905. Outside of business, Davenport turned to the study of botany, and particularly of ferns. While he did not publish any large monographs, he was well-known as an authority on ferns and published over one hundred short observations and articles on botany. He had compiled materials for a manual of North American ferns, but this was left unfinished at his death in 1907. Davenport moved to
Medford, Massachusetts in 1875. He served on the school board there for eighteen years, until his death. He took a leading role in the preservation of the
Middlesex Fells. He was a founding member of the
New England Botanical Club in 1896, and in 1898, was elected a fellow of the
American Academy of Arts and Sciences. ==Family==