Benjamin de Groot was the son of Meijer de Groot and Ida Wijnberg. Benjamin left Eindhoven for Rotterdam on 10 October 1882, and on 27 October 1884 he left for the East Indies Army’s depot in Harderwijk. On 4 February 1891 he returned from the Meester Cornelis regency in Java as sergeant of the East Indies Army. He became a merchant and left for Batavia. On 17 September 1894 he returned from Batav…