Organisers are also trying to trace the families of Brightlingsea women who married Kiwi soldiers and moved Downunder after the war.
"The legacy of these men and their comrades cannot be forgotten, the centenary of their arrival gives us an opportunity to remember them," organisers said on the official New Zealand WW100 centenary page.
The memorial weekend begins with a champagne reception in Brightlingsea on June 17 and includes an exhibition of World War I photographs and collectibles.
The following day will feature an Australian/New Zealand-themed carnival and family picnic and barbecue.
It will end on Sunday, June 19, with a service of commemoration, which will include laying of wreaths at the local war memorial, before a cricket match between a local team and one with Anzac connections.
• If anyone has information on Brightlingsea descendants, or seeks further information, they should contact Margaret Stone on 0044 1206 303286 or email: margaret@bright97.freeserve.co.uk.