Hello Tony 
Welcome to RootsChat.   

I'm not sure what type of assistance you are wanting, but the following (gleaned from a variety of sources), may be of some help.
NZ Birth1888 / 14959 - ACKERMANN - William Thomas 
Parents :   Susanna and Henry Emil [Spelling is as per the NZ BDM online Birth Registration index.   Note: Other births this couple also indexed as "ACKERMAN".]
Probable NZ marriage of Parents :
1883 - Henri ACKERMAN
N - Susan ALLAN  [Source: NZSG Marriages CD]
New Zealand Naturalisations Heinrich Emil ACKERMANN - born about 1852  - aged 36 years 
Born:  Germany   /    Occupation:  Basketweaver 
Resident City:  Christchurch
Naturalisation Date:   29 March 1888
File No.  1888/787    -    Certificate No:  25   Regn. Page No.  124
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NZ MarriageWilliam Thomas ACKERMAN - Dorothy Valentine Ion CLARK -- Year :  1917 [Attestation form NZ Army gives marriage date as 28 February 1917 at Christchurch. ]
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