If you consider the spelling of his name(s) in his own life time, 'Isaac' would be a good option but it is better if you give them all.
Consider the following:
- at his own baptism (NL-SAA-24742463)
1688 - Isack
- when he joins the VOC (NL-NaHa-1.04.02 7-5673-186)
1715 - Isaac Nieuhout
- when his children are baptized (http://www.eggsa.org/sarecords/index.php/church-registers/cape-town...)
1718 - Isaac Niewout
1720 - Isaac Niewout
1724 - Isaac Nieuhout
1725 - Isaac Nuhout
1727 - Isaak Nieuwout
1730 - Isaac Niewout
1732 - Isak Nieuwout
Okay, Corney I've made the changes on his profile, and put a note to this Discussion. I think your reasons 'carry the day' so I changed to Isaac. I left the surname as is, but added his VOC spelling & his spelling at his childrens' baptisms into the 'nicknames' so they will feature on searches.
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