Note from the OHS PC Database, derived from A Guide to North American Organbuilders, by David H. Fox (Richmond, Va., Organ Historical Society, 1991). —

Born c. 1806 in New York; father of J. C., Theodore, and Henry W. Knauff, Jr.; active in Philadelphia, Pennsylvania, 1837–1863; partner with Henry, Jr., 1864.

Source:

• Stephen L. Pinel, "Organbuilders and Their Families: in the Population Schedules of the Federal and State Census Surveys", The Tracker 32:1 (Organ Historical Society, 1987), 22.
•  

From Organ Database Builders editor Stephen Hall, November 1, 2019. —

Born April 1809 • Albany, New York
Died November 1, 1897 • Philadelphia, Pennsylvania

Source:

• Jeffrey B Fowler, DMA
  Archivist, Philadelphia Chapter of the AGO.