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In page Llywelyn ap Gruffudd:
"Following the death of King Henry in late 1272, with the new King Edward I of England away from the kingdom on a crusade,[5] the rule fell to three men. One of them, Roger Mortimer was one of Llywelyn's rivals in the marches. When Humphrey de Bohun tried to take back Brycheiniog, which was granted to Llywelyn by the Treaty of Montgomery, Mortimer supported de Bohun.[citation needed] Llywelyn was also finding it difficult to raise the annual sums required under the terms of this treaty and ceased making payments.[2]
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