The Canadian censuses were conducted in 1851 then every ten years afterward. Did you check the 1891 census? I know there is no index, which requires you to search page-by-page, county-by-county, and it's very time consuming. The 1901 images are available online, but, again, no index.

It's also possible they moved back to the U.S. Did you check the 1900 U.S. census?

Please let us know, so that we can help you find additional sources.

- Lisa B. Lee
Oakland, CA

: LEWIS FAMILY: I AM THE GREAT-GREAT GRANDDAUGHTER OF BERRY LEWIS AND
: WIFE, LUCY (CLANTON) LEWIS WHO, WITH THEIR CHILDREN, SETTLED IN
: COLCHESTER SOUTH (ESSEX COUNTY) AND APPEARED ON THE 1860 CENSUS.
: BERRY AND LUCY WERE BOTH BORN IN VIRGINIA. BY 1866 THEY HAD HAD
: ELEVEN CHILDREN (SEVERAL OLDER ONES HAD MARRIED AND MOVED AWAY.

: THEY APPEARED ON THE 1860, 1871, AND 1881 CENSUS AND THEN
: DISAPPEARED. NEED HELP.