We are clearly dealing with the same family. I have been in touch with Richard and Carrie Herbert and seen their archive, including the bible. Richard gave me 1767 (you have 1763) for Benjamin Brinkhurst's year of birth. Do you know which is correct? Mary's birth details are new to me. I have recently found a marriage of Benjamin Brinkhurst to Mary Finch. From memory it was at St George in the East which would fit. Do you know Mary's maiden name? I am related through Benjamin and Mary's daughter Sarah who married Thomas Herbert (1811 -1876). Hebert Herbert, a son of Thomas and Sarah, was my great grandfather. I believe Thomas Herbert (1741-1817) was the father of Thomas Herbert (1811-1876). Thomas senior also had a daughter Margaret born 1775 who married John Clarke 1801 at Ludlow. Is this your line? Please contact me directly.