This is all I have on James and family at this time.
James Lock ( son of James Lock ) Marriage date: February 11th, 1845 St. James, Bristol, Gloucester, England To: Mary Ann Whaits ( daughter of James Whaits ) he was age 25, she was age 28 at time of marriage
Albert James Lock Christening: February 8th, 1846 St. Michael, Bristol, Gloucester, England Parents: James Lock & Mary Ann
Bendery Lock ( male ) Christening: September 12th, 1847 St. Michael, Bristol, Gloucester, England Parents: James Lock & Mary Ann
Can't be sure if this William James Lock below is AKA James Lock husband of Mary Ann Whaits, but the birth date seems to fit.
William James Lock Birth date: December 21st, 1821, Christening: April 22nd, 1822 Fairford, Gloucester, England Parents: Thomas Lock & Mary Ann