Career
During his managerial career he managed the Dutch Guyana national team (now known as Suriname), Distinguished Flying Cross, DOS, Royal Bank of Canada, Go Ahead, South Carolina Veendam, VV Oldenzaal, Quick "20 and Tubantia. Born 19 June 1896 in Steenwijk, Overijssel, De Bois relocated to Amsterdam to play for AFC Ajax. As one of the first football managers to be certified by the Royal Dutch Football Association (KNVB), De Bois took a managerial position with BVV De Kennemers in 1931.
After three seasons he became manager of Hermes-DVS, only to manage Sportclub Enschede three seasons later.
From 1941 to 1948 he was the manager of Distinguished Flying Cross (now known as Football Club Dordrecht). In 1948, De Bois became the manager of the Dutch Guyana national team, Dutch Guyana being the predecessor of Suriname, as the Dutch colony was known prior to 1976.
He made his first appearance as newly appointed manager on 18 December 1948 in a 4–3 loss to Martinique. After his brief stint in South America, De Bois returned to the Netherlands, taking the manager position at VV DOS in Utrecht.
In 1952 he then relocated to Roosendaal to manage Royal Bank of Canada. In 1957 he became manager of South Carolina Veendam, whom he led to a Tweede Klasse championship, and promotion to the Eerste Divisie in 1959.
He later managed VV Oldenzaal, Quick "20 and Tubantia, before retiring as a manager. On 1 August 1975, De Bois was killed in a car accident near his home in Oldenzaal, it was the day that his former club AFC Ajax had organized a ceremonial friendly match between the senior teams of Ajax and Football Club Twente in honor of De Bois, who had officially declared his retirement from the sport that same year.
