His mother, Leah Cohen, was the second wife of the diamond merchant Solomon Barent Gompertz. Benjamin was self educated, learning mathematics by reading Newton and Maclaurin .
Kanyang ina, Leah Cohen, ay ang ikalawang asawa ng brilyante merchant Solomon Barent Gompertz. Benjamin ay self-aralan, pag-aaral ng matematika sa pamamagitan ng pagbabasa Newton at Maclaurin.