My uncle Henriques I never knew

My name is Frederik Dias Santilhano Jr., the eldest son of Frederik Dias Santilhano Sr. and HannaLore Stern.
Henriques (Isaak) Dias Santilhano was the son of Jacob Dias Santilhano and Anna Dondorp.
Henriques had a brother Frederik (Moses) Dias Santilhano, who passed away on 11 November 2005 at the age of 96.
What I have been told, Henriques and Estella nee Bamberger, his wife, tried to escape to Free France, but were picked up still in the Netherlands and put on transport to Auschwitz, where they perished. There are a few photos that are in my possession, but none of the two brothers so far. I still have to sort out more papers and photographs .