Hugo Leonardus was born on 21 October 1849 in
Wijk bij Duurstede,
Utrecht, as the son of Sara Johanna Verment (1805–1873) and Johannes Abraham Gerth van Wijk (1803–1873), who owned a
boarding school in Duurstede. Two older brothers became
linguists and
theologians respectively, but there was not enough money for Hugo to also pursue a university education, so he instead followed the MO Opleiding Biologie, after which he was appointed biology teacher at the Rijks HBS, on 16 September 1873, as successor to
Herman van Hall. He was associated with both the Stedelijk Gymnasium and the Rijkskweekschool (both from 1879) until his retirement in 1914. At the time,
Middelburg was an isolated and bourgeois city distant from everywhere. Several years later, in 1971, an (unchanged) reprint appeared, with an introduction and biography by F.A. Stafleu. but this was a press mistake since it was his older brother
Didericus who was the director of that school between 16 September 1873 and 1877. ==Personal life and death==