I believe that’s his grandson.
Donald Trump’s sister (86) found dead in Upper East Side apartment
President Donald Trump’s sister was discovered dead in her Upper East Side apartment early Monday morning.
Maryanne Trump Barry, 86, was found inside her Fifth Avenue apartment at around 4 a.m.
https://abc7ny.com/donald-trump-sister-maryanne-barry-upper-east-side/14052530/