Background
Buchanan, Roberdeau was born on November 22, 1839 in Philadelphia, Pennsylvania, United States. Son of McKean (pay director United States Navy) and F. Selina (Roberdeau) B.
Buchanan, Roberdeau was born on November 22, 1839 in Philadelphia, Pennsylvania, United States. Son of McKean (pay director United States Navy) and F. Selina (Roberdeau) B.
Bachelor of Science, Lawrence Scientific School (Harvard), 1861.
Mathematician, Nautical Almanac Office, United States Naval Observatory. Has made calculations for Nautical Almanac, since 1879. Author: Genealogy of the Roberdeau Family.
1876.
Genealogy of the Descendants of Doctor William Shippen, the Elder, 1877. Genealogy of the McKean Family, 1890. Life of Governor Thomas McKean of Pennsylvania, 1890.
Observations on the Declaration of Independence, 1890.
Treatise on the Projection of the Sphere, 1890. The Mathematical Theory of Eclipses.
Married Lyla M. Peters, 1888.