Sorry, the first response to your email is incorrect. Catharine Mills, nee Cary married Ralph Mills, had a son Thomas. Catharine and Thomas moved to Staten Island in the late 1840's after the death of Ralph. Thomas married Margaret Ross and had a daughter (and others) named Catherine Mills who married Antonio Lalli. I don't know if a John Mills is related to these Mills at all. I don't know of any siblings to Ralph Mills.