By the late 15th century, the Pale became the only part of Ireland that remained subject to the English king, with most of the island paying only token recognition of the overlordship of the English crown. The tax base shrank to a fraction of what it had been in 1300. A proverb quoted by Sir John Davies said that “whoso lives by west of the Barrow, lives west of the law.” The earls of Kildare ruled as Lords Deputy from 1470 (with more or less success), aided by alliances with the Gaelic lords. This lasted until the 1520s, when the earls passed out of royal favour, but the 9th earl was reinstated in the 1530s. The brief revolt by his son "Silken Thomas" in 1534–35 served in the following decades to hasten the Tudor conquest of Ireland, in which Dublin and the surviving Pale were used as the crown's main military base. A book "A Perambulation of Leinster, Meath, and Louth, of which consist the English Pale" (1596) expressed contemporary usage.