William is a Millwright on the baptism records. There is also an Isabella Clark Clazey, baptized 1833, same parents.
1841 census, Parade, Berwick,
Wm Clazey, 40, Millwright, b. Scotland,
Jane Clazey, 40, Y,
James Clazey, 20, App, Y,
Jane Clazey, 15, Y,
Isabel Clazey, 7,Y,
HO107/844/3/16/25
1851 census, Parade, Berwick,
William Clazey, 50, Millwright, b. Scotland,
Jane Clazey, 49, wife, b. Berwick,
Jane Clazey, 20, dau, Dressmaker, b. Berwick,
Isabella Clazey, 17, dau, Dressmaker, b. Berwick,
HO107/2421/566/4
Alan.