[1] He served as an advisor to King Korokī Mahuta and as the spokesperson for Kingitanga leader, Te Puea Herangi.
In 1946, Roore accepted the compensation settlement for the 1864 Confiscation of Waikato Land by the Crown speaking on Te Puea's behalf.
In his late twenties, Roore had already begun to make regular appearances in the Native Land Court, reciting complex descent lines and possessed of narratives that filled the gaps in the evidence of other witnesses.
In the post-confiscation context, there was a contest for remaining Māori land blocks and having whakapapa knowledge improved the chances of a successful outcome for the hapū.
In 1947, Rore was a co-petitioner of Karena Tamaki's Petition 29/1947 to the Crown relating to Ngāti Apakura land near Lake Ngāroto.