Rudolph Daniël Wallig was the eldest son of Daniël Wallig and Roosje Mok. He had no profession and was unmarried. He was born 10 October 1920 in Amsterdam and lived since 1925 with his parents at Gijsbert van Amstelstraat 31 upstairs, and per 10 Mei 1932 he moved with the family to Paramariboplein 28 2nd floor. Rudolph Daniël had two brothers, Jo Theo and Henri Eduard and a sister Jacqueline Alexandrine. They are, just like their mother, killed during the Holocaust. His father passed away already 24 August 1940 in Amsterdam.
On 3 November 1941 Rudolph Daniël Wallig was unsubscribed from the Amsterdam Peoples Registry to Heemstede. His address there is unknown but his stay in Heemstede was short-lived: on 4 December 1941 Rudolph Daniël Wallig already passed away there.
Sources: City Archive of Amsterdam, archive cards of Daniël Wallig, Rachel Mok, and the website wiewaswie.nl. certificate of death nr. 208 dated 5 December 1941 for Rudolph Daniël Wallig, made out by the Municipality of Heemstede.