Source of birth date is Canada 1851 census, where she is shown living with her son William's family.

This year does not correspond to the following information, appearing (as of January 2009) at http://freepages.genealogy.rootsweb.ancestry.com/~culbert/g_scot_cuthbertson.htm :

"G" CUTHBERTSON FAMILIES OF SCOTLAND

Compiled By: James H. Culbert

Last Revised: 23 Mar 2005

     George CUTHBERTSON, and wife, Marion GRAHAM; (bur. Plot 79, Largo Cemetery, Fife, Scotland) : [Note: This information comes from gravestone inscriptions obtained on the Internet, however no dates were provided.] 

     1. George CUTHBERTSON, weaver; m. 19 May 1753, Kilmaurs, Ayrshire, Scotland, Agnes SMITH ayr2 ksr  They had:

           1.1 Grizel CUTHBERTSON; (bap. 24 Mar 1759) 

     George CUTHBERTSON; m. 30 Jun 1826, Kilmarnock, Ayrshire, Scotland, Janet SMITH ayr2 

     George CUTHBERTSON; m. 20 Dec 1831, Kilmarnock, Ayrshire, Scotland, Jean GELCHRIST ayr2 

     George CUTHBERTSON; m. 22 May 1852, Dreghorn, Ayrshire, Scotland, Marian ARMOUR; or m. 22 May 1852, Stewarton, Ayrshire, Scotland, Mary Ann ARMOUR ayr2 

     Gertrude CUTHBERTSON; (b. Ireland); 1881, found in census for Lanarkshire, Scotland is 

     Grisie CUTHBERTSON; m. 31 May 1817, Kilmaurs, Ayrshire, Scotland, Willima REID ayr2 

Notes

Note: The information shown above without a reference was obtained mostly from the Scotland OPR records.

ayr2 Ayrshire Cuthbertson OPR Marriages Last Viewed: 23 Jan 2004

is Viewed Jan 2003 at: Irish Stray website. This is an index of persons born in Ireland who fall into one of three categories:

a) Persons born in Ireland who were elsewhere in England, Scotland or Wales for the 1851 Census;

b) Persons born in Ireland who were elsewhere in England, Scotland or Wales for the 1881 Census; or

c) a few records from the surviving fragments of the 1851 census for County Antrim, Ireland.

ksr Kilmaurs, Scotland Secession Register.

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If we suppose, however, that a transcription error has changed "1769" into "1759," this would be the same Grizel Cuthbertson as appears on the 1851 Canada West census with her son and his family.

The specific information here used for Grizel reflects this supposed identity between the two. Before the addition of that information, all that was known about Grizel was obtained from (http://awt.ancestry.com/cgi-bin/igm.cgi?op=GET&db=taskmaster&id=I29874&ti=5538) and (http://brydgesfamily.homestead.com/INDEX_PENMAN_FAMILY.html), both concerning the Penmans. Her death date was obtained from an online source at www.ancestry.com which was not wholly reliable in other details.