Henry Blake, Jr. was the son of John Blake and Margaret le Brun. He married Mary Bermingham. Henry Blake, Jr. was mentioned in a Deed of Award in 1424. Celia Blake, and Henry Blake, Jr., with their cousins Henry Blake, Walter Blake and William Blake made a perpetual grant to the parish church of St. Nicholas, Galway, County Galway, Ireland, in 1435. He received a grant by deed all of the messuages, lands and tenements that descended or might in the future descend to her as the heir of her father from Celia Blake on 6 October 1438. In 1445 an award was made between William Blake, and his cousins Henry Blake, Jr. and John Blake, to settle the disputes between them as to the division of the lands of their uncle Henry Blake, Sr., (they refered all disputes between themselves to arbitration of Willug Burk, Lord of Clanricarde and Sheriff of Connaught, and Master John, Friar-General of the Friars Preachers). He held the office of Burgess of Galway and of Athenry. His last will was dated 1457.