John was born before 1695, the son of Richard Brewerton and Jane [un]. The place is not known.
His wife was Alice [un], who 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-?).