against a larger English force until the O'Brien and allies could reach the battle and decisively secure victory. Unity and resurgence The last successful attempt by a Norman to play divide and conquer within the Thomond kingship was the case of Maurice FitzGerald, Earl of Desmond. A very powerful man, he was constantly rumoured during his life to have wanted to make himself King of Ireland. He successfully sponsored Brian Bán Ó Briain in overthrowing Diarmuid from Clan Tadhg during 1343–1350, but equally decisive was the sides taken by Mac Con Mara, leading to Diarmuid's restoration. With the exception of a failed Norman attempt to reconstruct Bunratty Castle by Thomas de Rokeby from 1353 to 1355, the Norman settler-colonialist project in Thomond was at an end until the submission of the Ó Briain in the 16th century. The Norman Lordship was weakened by the Bruce Wars of 1315–1318, the Black Death of 1349–1350 (which disproportionally hit Norman controlled towns) and besides that English forces were more invested with the Hundred Years' War in France and their own internal conflict the Wars of the Roses to focus too much on Ireland. All of these factors allowed for a 15th-century Gaelic resurgence, not only in Thomond but across a significant part of Ireland outside of the Pale. Brian Bán was the last of Clann Briain Ruadh to hold the kingship and from 1350 onwards, Clann Tadhg held sway. Mathghamhain Maonmhaighe Ó Briain came to power before the death of his uncle Diarmuid and he was named as such because he spent time as a foster child in Máenmaige. His succession was disputed by his uncle and brother; Toirdelbhach Maol Ó Briain and Brian Sreamhach Ó Briain. Of the two Brian Sreamhach gained the upper hand and when his uncle tried to enlist the help of the Earl of Desmond to wrestle back the realm, Brian thoroughly routed them at Croom in a key military success. This had the added benefit of winning back Limerick for Thomond and Sioda Cam Mac Con Mara was placed in the city as a warden in 1369. The friendship with the de Burghs of Galway was maintained by Brian and when Richard II was at Waterford in 1399, he paid nominal homage and was well received. Thomond was now in such a position that Conchobhar mac Mathghamhna Ó Briain's twenty six-year reign was marked as a time