www.allaboutestates.ca/the-importance-of-independent-witnesses-in-a-will-challenge/
www.canlii.org/en/on/onsc/doc/2021/2021onsc6689/2021onsc6689.pdf
See also:
disinherited.com/uncategorized/mental-capacity-to-make-a-will-2/
www.canadianlawyermag.com/practice-areas/trusts-and-estates/supreme-court-of-bc-declares-deceased-womans-will-invalid-due-to-lack-of-testamentary-capacity/368787
www.canlii.org/en/bc/bcsc/doc/2022/2022bcsc1298/2022bcsc1298.html
hullandhull.com/Knowledge/2022/12/challenging-a-power-of-attorney-for-lack-of-capacity/
www.canlii.org/en/on/onsc/doc/2022/2022onsc3733/2022onsc3733.html