Marriage of John Wark and Anne Bustead County Donegal

Looking for a record for a marriage dated before 1839.

Canadian marriage and death records for their daughters Mary Anne born approx 1838, Margaret born 1839, Martha 1844 and Jane born 1848 haveseveral variations for spelling of their mother's surname, these include Bustead, Bursted, Barstead and Bastard.

Date of immigration to Canada approx 1847. The family settled in the Ottawa River Valley, in Renfrew and Ross townships.

There are other Warks named James or William Wark born about 1810, who also migrated to the same area,

Any information woukd be great

Thanks