Hendrik spent his childhood in Java, before being sent to the Netherlands to receive an education at the Netherlands Missionary Society (NZG) School of Mission at the age of 11.
Hendrik menghabiskan masa kecilnya di Jawa, sebelum dikirim ke Belanda untuk menerima pendidikan di Sekolah Misionaris Nederlandsch Zendeling Genootschap (NZG) pada usia 11 tahun.