Have a look on the Dorset OPC site
www.dorset-opc.comI put cozens in the search engine and got 70 hits, including this one:
Parish of Litton Cheney 1861 CENSUS
PRO Ref RG9/1366 498 persons, 117 dwellings
all at Gorwell
Barjew; COZENS Sen; head; mar; 47; ag lab; Portisham; F121P24
Ann; COZENS; wife; mar; 45; ; Carsgate; F121P24
Henry; COZENS; son; un; 23; carter; Carsgate; F121P24
Barjew; COZENS jun; son; un; 19; ag lab; Carsgate; F121P24
Elizabeth; COZENS; daur; un; 14; ; Carsgate; F121P24
William; COZENS; son; ; 11; scholar; Kingston Russell; F121P24
John; COZENS; son; ; 6; scholar; Kingston Russell; F121P24
Ellen; COZENS; daur; ; 3; ; Kingston Russell; F121P24
Sarah; COZENS; daur; ; 9m; ; Longbridy; F121P24
Recognise anybody

Bob