My gggrandfather was Joachim Herrmann Kronmöller. Born Hamm(Hamburg Germany) 30-12-1817. Married to Rebecca Smith from Holland. It is possible his father was Johann Joachim Kronmöller, born ca. 1790 Billwaerder Hamburg and his mother was Anna Margaretha Elisabeth Siemens,born Schiffbeck( also near Hamburg) Does anyone know if he had brothers and sisters or something else? Thank you.