So to summarise you have:
1849 (04 Nov): Charles KISKI, cabinet maker, native of Prussia, arrives by sea from Rotterdam.
1851 (census): Charles WISKY, 30, cabinet maker b Germany, is lodging in Little Windmill St, Westminster.
1851 (22 May): Charles KISKY, full age, cabinet maker, father Peter (dead), marr Anne Brown, St Pancras.
1861 (census): Charles KISKY, 40, cabinet maker b Germany, is in Marylebone with his family.
1867 (Dec qtr): Charles KISKY, 46, dies in Pancras registration district.