Isaak NIEWOUDT was from Amsterdam, he came to the Cape c 1716. He was a soldier and surgeon. He got married 6 February 1724 to Johanna van Wyk she was the daughter of Willem van Wyk and Trijntje Harmensz.

Maria [Anna] had a son born from Willemse but when she married Niewoudt, he took on this surname and all his descendants [followed suit]:

Gerrit Niewoudt (Willemse) was baptised 2 May 1717, X 26 April 1739 Johanna Steenkamp

Helena [Niewoudt] baptised 9 Oct 1718, X 4 March 1736 Izaak Visagie

Jeremias baptised 17 Nov 1720

Ref. SA Genealogies Volume 6 page 320 and http://www.stamouers.com/niewoudt.htm

Gerrit Willemse a. 1690 v. Leeuwaarden, Friesland, Noord- Nederland, kalkbrander en veeboer x Kaapstad 9.4.1691 Machteld (Maria) CORNELISSE(N) * Kaapstad c. 1671 d.v. Willem Cornelis(sen) en Maria v. Bengale xx c. 1716 Johanna (Anna) VAN WYK d.v. Willem van Wyk en Catharina Hillebrandt

Tweede huwelik

b11 Gerrit ≈ Stellenbosch 2.5.1717

Cf. http://www.ballfamilyrecords.co.uk/kfp/I303.html