The applicants, estate trustees of the late Ellen Kates, sought to propound codicils executed in August 2011.
The objectors challenged the codicils on the grounds of lack of testamentary capacity and undue influence, citing the testator's diagnosis of moderate Alzheimer's disease.
The court found that despite the cognitive impairment, the testator understood the nature and effect of the codicils, the extent of her property, and the claims of those excluded.
The court also found no evidence of coercion or fraud amounting to undue influence.
The codicils were admitted to probate.