Hi, You are searching for information about
David DECTAR - married Sarah HERSHORN arrived Canada early
1890's
To St.Paul Minn. by 1895.
Was the couple married in Saskatchewan/Canada.?
Sask.Vital Statistics online - does not show marriages.

What information are you searching for?
Always best to start witht he most current information - and work back.

The couple did not spend enough time in Sask. for much information to be available.

Have you searched: Border Crossing :St. Albans records
Canada to USA?

Have you researched in St.Paul Minn.
When did they arrive. Where did they live?
Were there any children born there?
Have you obtained birth Registrations.
Did David DECTAR obtain U.S.Citizenship
If so - have you obtained Letter of Intent - Citizenship
from State Archive or National Archive in Washington?

When did he family move to Monreal?
Did the family stay in Montreal, In Quebec.
Did David DECTAR obtain Canadian Naturalization?
Do you know When? Where David DECTAR , Sarah DECTAR nee HERSHORN passed away?
Registrations of Death - will show personal informaton - as required at the time - and known to the informant.
May show date and place of birth - names of parents including maiden name of mother.

Citizenship/ Naturalization applicatons will show date and port of departure - date and port of arrival -Name of passenger ship.
http://www.collectionscanada.gc.ca/databases/passenger/index...
Cheers, STella