Somdet Chao Phraya Borom Maha Prayurawongse or Dis Bunnag (1788–1855) was a prominent political figure in Siam during the mid-19th century. He acted as regent for King Mongkut (Rama IV) kingdom-wide. He led Siamese fleets in the Siamese-Vietnamese Wars and became a Somdet Chao Phraya - the highest title the nobility could attain with equal honor to that of royalty.Dis Bunnag was born in 1788 to Bunnag and Lady Nuan (who was Queen Amarindra's sister). His father, Bunnag, or Chao Phraya Akka Mahasena, was the Samuha Kalahom and Buddha Yodfa Chulaloke's (Rama I) trusted general.Dis entered th