in 1601–03, the Plantation was re-constituted by the Governor of Munster, George Carew. The English settler population in the 1620s was four times greater than in the earlier Munster plantation and powerful enough to control a considerable area after the Irish Rebellion of 1641. Ulster Plantation (1606 onwards) Prior to its conquest in the Nine Years War of the 1590s, Ulster was the most Irish-Gaelic part of Ireland and the only province that was completely outside English control. The war, of 1594–1603, ended with the surrender of the O'Neill and O'Donnell lords to the English crown, but it was also a hugely costly and humiliating episode for the English government in Ireland. In the short term the war failed, and generous surrender terms given to the rebels re-granted them much of their former land, but under English law. But when Hugh O'Neill and the other rebel earls left Ireland in the so-called 1607 Flight of the Earls to seek help from the Spanish Crown for a new rebellion, the Lord Deputy Arthur Chichester seized the opportunity to colonise the province and declared the lands of O'Neill, O'Donnell and their followers forfeit. Initially, Chichester planned a fairly modest plantation, including large grants to Irish-born lords who had sided with the English during the war. However, in 1608 Cahir O'Doherty's rebellion in Donegal interrupted implementation of this plan. O'Doherty was a former ally of the English who felt he had not been fairly rewarded for his role in the war. The rebellion was swiftly put down and O'Doherty killed, but these events gave Chichester a justification for expropriating all of the original landowners in the province. In 1603 James VI of Scotland also became James I of England, uniting these two crowns and also gaining possession of the Kingdom of Ireland, at that time an English Crown possession. The Plantation of Ulster was promoted to him as a joint "British", i.e. English and Scottish, venture to pacify and civilise Ulster. It was agreed that at least half of the settlers would be Scots. Six counties made up his official plantation of Ulster: The plan was determined by two factors: first, the Crown wanted to protect the settlement from being destroyed by rebels like the Munster plantation. So rather than settling the planters in isolated pockets of land confiscated from convicted rebels, they confiscated all of the land and redistributed it, creating concentrations