Paul Delvaux, painter (1897–1994) lived on avenue des Campanules, and painted many scenes in the area, notably Watermael railway station
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Rik Wouters, artist (1882–1916), lived on rue de la Sapinière from 1907 to 1914.
Coppens was born in Watermael-Boitsfort, near Brussels and was conscripted into the army in 1912, to serve with the Premiere Regiment Grenadiers.