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

Brother of James and Thomas Hall; active in Philadelphia, PA, 1820s; partner with James Hall in Philadelphia, Pennsylvania, by 1826; grocer and other work thereafter.

Sources:
Dr. Stephen Pinel.

from - The History of Frederick County (Maryland) by Thomas John Chew Williams , 1910 pg 433 A long and complex history of the Trinity Reformed Church, Frederick MD, mentions that a Sabbath school was opened in 1821 and in 1826 an organ was purchased from Wilfred Hall of Philadelphia, for $700.

The United States, Gazette (Philadelphia PA) July 6, 1836 pg 4- advert , selling "a large Church Organ", Wilfred Hall & Co. S. W. corner of Race & 3d Sts. (Philadelphia)