John was born before 1695, the son of Richard Brewerton and Jane un. The place is not known.
His wife was Alice un, whom he married in BEF 1715. The place has not been found. Their eight known children were John (1715-1786), Jane (1718-?), Thomas (1720-?), William (<1722-<1724), William (<1724-?), Mary (<1726-?), Margaret (<1733-?) and James (<1742-?).