One of the stories he uncovered was that of Alexander Black senior, a builder, who was one of the early settlers in the Bay of Plenty in 1837 who witnessed the proclamation of the colony in 1840.
"And the story goes that they had the proclamation in a desk draw ... and for whatever reason, they couldn't get the draw open. There was some suggestion that the Governor had left the key behind, but Alexander Black stepped forward and got the draw open and then became one of the witnesses," Mr Argent said.
He learned this tale by finding the grave of his son, Alexander Black junior, at the Symonds St cemetery then researching his history.
Mr Argent also found a grave belonging to Kenneth McKenzie and Robert Smith, brothers-in-law who drowned after a sailing accident in the Kaipara Harbour in 1881.
On the day of the tragedy, Mr McKenzie's wife - also Mr Smith's sister - gave birth to a son whom she named after his father.
Only one body was found and it could only be identified by the clothing he was wearing, including his socks, Mr Argent said.
To kick off New Zealand History Month, the New Zealand Society of Genealogists, in association with Ancestry.com.au, will be holding a special event Auckland Library's Whare Wananga that will include an expert panel discussion on national identity and what it means to be a Kiwi today.