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| Phommathat ພະຍາພົມມະທັດ | |||||
|---|---|---|---|---|---|
| King of Lan Xang | |||||
| Reign | 1428–1429 | ||||
| Coronation | 1428 | ||||
| Predecessor | Lan Kham Deng | ||||
| Successor | Yukhon | ||||
| Born | Muang Sua, Lan Xang | ||||
| Died | 1428 Muang Sua, Lan Xang | ||||
| Issue | Prince Kay Buna Ban | ||||
| |||||
| Dynasty | Khun Lo | ||||
| Father | Lan Kham Deng | ||||
| Mother | Keo Poum Fa | ||||
| Religion | Therevada Buddhism | ||||
Phommathat was the fourth king of Lan Xang (Laos) (ruled 1428–1429). He was Lan Kham Deng's oldest son. He was king for only 10 months. He was assassinated by Nang Keo Phimpha. He was succeeded by Yukhon.[citation needed]