From A Wiki of Ice and Fire
Year 83 After the Conquest (83 AC) is a year in the Westerosi calendar, the 83rd after Aegon's crowning in Oldtown that maesters and educated people use as a reference to date the years.
83 AC is remembered as the year of the Fourth Dornish War, an aborted attempt of Prince Morion Martell to invade the Stormlands by sea. While his fleet was sailing across the Sea of Dorne, king Jaehaerys appeared on Vermithor, with his sons Aemon and Baelon riding Caraxes and Vhagar at his side. All the Dornish ships burnt, and Morion and all his men died. 
- Prince Morion Martell, at the Fourth Dornish War
Titles and Appointments
- Princess Mara Martell becomes Princess of Dorne after her father's death.
- ↑ Fire & Blood, The Long Reign - Jaehaerys and Alyssane: Policy, Progeny, and Pain.