C.C. de Villiers wrote in 1892 in the Ancestry Registers of Old Cape Families (Geslagsregisters van Ou Kaapse Families) about Dirk Coetsee: After 1685 he was in the service of the church (the Moederkerk or Mother Church of the Dutch Reformed Church) as deacon and elder, and after 1687, he was in the college of heemraden (aldermen). In 1706, he became captain of the Stellenbosch Infantry. In 1682, he approached Commander Simon van der Stel and was in particular given a piece of land or place later called Coetsenburg, located close to Stellenbosch. He also has a piece of land in Jan Jonkershoek (the Jonkershoek Valley), under the big mountain (Stellenbosch Mountain), called Assegaaibosch. A branch of the family intermarried with the British and Anglicized after the British conquest in 1795 and the Coetsenburg Estate is now under their custodianship.