Hi Jean, im sorry but i dont think theres any connection that i can think of, Charles Weston, Mary Anns husband,was born in Birmingham in 1870 ish (censuses vary) and his father, Josiah Weston was also born in Birmingham in 1842, and he worked in the gun trade. Josiah's father was Henry Weston born also in Birmingham in 1814.
Charles Weston and Mary Ann (maiden name Harris) did have a son called Joseph, who i had completely forgotten about, but he was born in 1901. Their other children were Sarah Ann, born 1894, Lily, born 1913, and Minnie, born in 1918, and Mary Ann, cant remember her birth year offhand. If you think there might be a connection and need more info just ask .bye