He arrived in the Cape Colony in 1688 in the service of the Dutch East India Company, and joined Isaq Schrijver's expedition from 4 January to 10 April 1689.
Since he now had an assured income, Oldenland could marry Margaretha Hendrina van Otteren, widow of the former garrison bookkeeper, Johann Heinrich Blum.
[3] Backed by Simon van der Stel, Oldenland and Hartog invested an enormous amount of work in the Company Garden, turning it into an interesting attraction for foreign visitors.
A Herbarium vivum was a compilation of pressed useful plants, such as those having, for example, good timber, edible fruits, tubers and corms, often embellished by paintings and sketches, or inked impressions of leaves or flowers.
Donker eventually disposed of the volumes in Holland as they next came into the possession of Johannes Burman, then professor of botany at the University of Amsterdam who drew upon the collection for his Thesaurus zeylanicus.