Isaac Nathaniel Marselis
Tintype Etching, George Bergner, 1858
Born March 21, 1801, Schenectady, New York, the son of Nicolaas and Machtelt (Rosa) Marselis; Dr. Marselis graduated from Union University, NY; received a Medical Degree from Univ. of Pennsylvania, 1825; appointed Philadelphia Port Physician, 1839-1844; member of the Select Council of Philadelphia; and was elected to the state Senate in 1857. Although a Democrat, Marselis was a member of an 1850 mass meeting, pledging support for the Union but expressing dissatisfaction to the 1850 Compromise. In Senate business, he introduced the bill to sell the state canal system to private business. He married Rachel Knorr in 1824, the daughter of prominent Philadelphia physician, John Knorr. He died on February 7, 1875.