Davidson was born in Auckland and is of Ngāti Porou, Te Rarawa, and Ngāpuhi descent. Her father is the actor Rawiri Paratene. Both her parents were Māori language campaigners in the 1970s. During her youth, the family moved a lot; Davidson started school in Wellington, but subsequently lived in Dunedin and Christchurch. At age nine, her family moved to Whirinaki in the Hokianga, where she spent the rest of her childhood. She started her degree in Hamilton and finished it in Auckland, from where she graduated with a Bachelor of Arts. She also holds a Graduate Diploma in International Diplomacy for Indigenous Studies through Te Whare Wānanga o Awanuiārangi.
