[1] He had established an architectural practise by the mid-1840s and he moved to Philadelphia in the mid-1850s, specialising in church designs.
[1][2] According to the records of the Court of common pleas Starkweather started work with Joseph C. Hoxie in November 1852 and became a full partner in 1854.
[2] The Common Pleas case was to divide the assets of the office but this took until 1858.
[1] George A. Frederick commented that after an erratic career Starkweather had moved to New York.
[1] From 1881 to about 1884 he was the partner of Charles E. Gibbs, with whom he designed the Potter Building, the Second Avenue Methodist Episcopal Church (since demolished) and .