Mazie on Family Tree Circles

I am building my family tree on the Cotton family who immigrated to New Zealand in 1856 on the Emma Colvin. James Henry Cotton and Mary Anne Nye of London with 3 children, Charles, Henry, Edward. James is listed on the passenger list of the Emma Colvin but Mary Anne and children are not. Perhaps they came out later. They had 7 other children in Nelson/ James parents were Henry and Elizabeth (Brown) married in 1829 at St Mary Parish Lambeth London.