Who is kushina grandmother?

Kushina Uzumaki's grandmother is Mito Uzumaki. Mito was the first jinchuriki of the Nine-Tails and played a significant role in the history of the Uzumaki clan. She was married to the first Hokage, Hashirama Senju, and their lineage is integral to the lore of the Naruto series. Mito's legacy continues through her granddaughter, Kushina, who also becomes the host for the Nine-Tails.