Complex sentence: If A. Sreedhara Menon was true, the Eradis marched towards the coastal fiefdom of Polanad and the Porlathiri, the ruler of Polanad ("Porakilanad") was killed during 48 year long war.
Split into simpler sentences: If A. Sreedhara Menon was true, the Eradis marched towards the coastal fiefdom of Polanad. The Porlathiri, the ruler of Polanad ("Porakilanad") was killed during 48 year long war.