Here is the earliest 'John Archer' presently known to me, who died in 1836, and one of whose sons was John Archer (senior) the brewer (probably the one mentioned as a brewer in The Victoria History of Oxfordshire) and another of whose sons was Thomas Archer, the vicar of Whitchurch, Bucks, who was a graduate of (I need to check) Pembroke College, Cambridge. (31.5.18).
John Archer (1803-1881) is my great-great grandfather. Anne Archer Archer is 'Bedspread Anne', who made the famous appliqué artwork - see elswhere in this site. She lived with her brother Thomas (1817-1902) in Adelaide Street, Oxford,