Aäron Groen, born 20 October 1934, was the youngest child of Jacob Raphaël Groen and Branca van Lochem. Their first born son was also an Aäron, born in Amsterdam in 1926 but died two years later in Borgerhout (Antwerp).
Aäron had an two year older sister Jetje and an older brother Herman, who was hospitalized on 19 October 1942 in the Central Israëlitic Psychiatric Hospital “Het Apeldoornsche Bosc…