Following Trump's death, Fred Jr.'s children contested their grandfather's will, citing his dementia and claiming that the will was "procured by fraud and undue influence" by Donald, Maryanne, and Robert Trump. These three had claimed in their legal depositions that Fred Trump was "sharp as a tack" until just before his death, with Donald specifically denying any knowledge of his father's mental decline, including his 1991 dementia diagnosis. Barry later privately admitted that she knew her father had dementia at the time. Mary L. Trump recounts that in later years her grandfather forgot people he had known for decades, including her, whom he referred to as "nice lady".
