so in 1861 GISCHLER 1861 census waterloo county/wilmot township / Lutheran
GISCHLER Kunikunda * female age 63 ( 1798) Hessen widow
GISCHLER Heinrich age 29 ( 1832) Hessen labourer
GISCHLER Anna age 18 9 1843) Hessen
also using that surname lots more to find here
http://search.labs.familysearch.orgsample of what's available in there:
Valentine Gischler Male
Birth 22 Apr 1902 East Zorra, Oxford, Ontario, Canada
Henry V. Gischler / Matilda Hohner
Canada Births and Baptisms, 1661-1959
(
http://homepages.rootsweb.ancestry.com/~maryc/oxford01p2.htm has marriage of John Metz & t Barbara)
William Henry Metz
Birth 05 May 1904 South Easthope Township, Perth, Ontario
John Metz & Barbara Gischler
* Lots of Kunigunda Geisler in the U.S. so that might be proper spelling? Apparently named derived from: Kunigunda was a German saint, the wife of Heinrich, the last king of the royal house of Saxony, also a saint.