William Christmas Mack (13 October 1818 - 9 May 1903) was an English pipe organ maker and refurbisher in Great Yarmouth, who established his practice in 1854.
[4] Early in life Mack (who had been baptised in the Wesleyan Methodist church) played the double bass in the small orchestra that led the singing in the chapel at Lyng;[5] this was in the days before widespread use of organs in churches and, before even then, harmoniums.
[6] On reaching adulthood, Mack moved to Yarmouth and briefly entered into business with an organ builder, Samuel Street, before setting up on his own account.
[10] The National Pipe Organ Register makes no reference to the Mack instrument.
[12] On his death, Mack's business of organ-building and pianoforte tuning was briefly carried on by his grandson, Samuel Robert St Quintin, at the same premises at 10 Blackfriars' Road.