What is the narrator point of view in the nonfiction book, ‘Tis: A Memoir?

Tis, A Memoir, is written from the perspective of Frank McCourt, and details his life in New York when he emigrates from Ireland at the age of 19. Though Frank has grown up in Ireland, he was born in New York when his parents lived there in his youth. When life in New York failed the older McCourt's, they moved their young family back to Limerick.