Jacob Aaron Westervelt
Jacob Aaron Westervelt (January 20, 1800 – February 21, 1879) was a renowned and prolific shipbuilder who constructed 247 vessels of all descriptions during his career of over 50 years. From 1853 until 1855 he was Mayor of New York City.
Jacob R. Brandt
Jacob Rugh Brandt (c. 1836 – 1911), a.k.a. "Blue Jeans" Brandt, was an American civil engineer who built many truss covered bridges in Ohio in the 19th century, born in Greenfield Township, Fairfield County, Ohio.