Frederick benson ,sailor, to Australia via New York,1853,any relatives?

[cheryl r benson]

Still searching after 22 years, for great-grandfathers' ancestors, his name was frederick benson or bengtsson,born at Gothenborg,parents stated to be Charles/Carl Benson and Joanna Elleson,no further details known,except that they were farmers,and that Frederick had a brother.
I would be everlastingly grateful for any information on these elusive ancestors.