Puakanga signed the Herald (Bunbury) sheet of the Treaty of Waitangi on 4 May 1840 at Coromandel Harbour.
In December 1839 Puakanga was among those to sign the sale of the Te Kopu block in the Coromandel district to John Webster. [1]
[1] Maori Deeds of Old Private Land Purchases in New Zealand, From the Year 1815 to 1840, with Pre-Emptive and Other Claims