The correct spelling of the plural noun is "cousins" (specifically first cousins, children of your parents' brothers and sisters).
Ernest Cozens died in 1929.
Ernest Cozens was born in 1888.
Barbara Cozens was born in 1906.
Barbara Cozens died in 1995.
Chris Cozens was born in 1982.
Alexander Cozens died in 1786.
Keith Cozens was born in 1957.
Michelle Cozens is 5' 6".
David Cozens has written: 'Huntingdonshire'
John Cozens was born on 1946-05-14.
Cozens Ranch House was created in 1874.
Charles Cozens Spencer was born in 1874.