I knew this was going to be tricky LOL. I have the Boer war record for a Gustav Nilson who lists his next of kin as being his sister Josephine Clark (my Great grandmother ?) and his address as being Tokatoka. What makes me think this is the right person is that my Greatgrandfather Robert McKenzie Clark's (Jospehines husband) family were from Tokatoka.
The same with the Boer War record for George Oscar Nilson - he too came from Tokatoka and lists his next of kin as being his sister Miss Annie Nilson.
I did at some stage , somewhere ??
on line find some record of Nilsons farming in the Piopio area and I vaguely remember family talk about this too
Thanks Mackiwi and Janette, will follow up the land office records and those variations on names