Alauddin Riayat Shah of Pahang
|علاء الدين رعاية شاه|
|Predecessor||Abdul Ghafur Muhiuddin Shah|
|Successor||Abdul Jalil Shah III|
|Father||Abdul Ghafur Muhiuddin Shah|
In 1615, the Acehnese under Iskandar Muda invaded Pahang, forcing Alauddin Riayat Shah to retreat into the interiors. He nevertheless continued to exercise some ruling powers and faced several further onslaughts by the Acehnese in 1617,1635 and 1638 and from Johor in 1638. His reign in exile is considered officially ended after the installation of a distant relative, Raja Bujang to the Pahang throne in 1615.
Raja Bujang who reigned as Abdul Jalil Shah was eventually deposed in the Acehnese invasion in 1617, but restored to the Pahang throne and also installed as the new Sultan of Johor following the death of his uncle, Abdullah Ma'ayat Shah in 1623. This event led to the union of the crown of Pahang and Johor, and the formal establishment of Johor Empire.