Looking for Davis Davies Family Tree Adminastrators IN the South Island of New Zealand Familys That Settled IN New Zealnd Around 1830 to 1850

in the South Island of New Zealand. Familys that settled in New Zealnd around 1830 to 1850
I have reason to belive that the original name was Davis when they landed in New Zealand then the name changed to Davies most likly because of NO Schooling and not being able to spell or write.
I am looking for a Male born around 1870 give or take 10 years each way most likly from English decent.
I want to ask for a DNA test to confirm the linage

for more info go to www.davisfamilytree.org