From A Wiki of Ice and Fire
Year 103 After the Conquest (103 AC) is a year in the Westerosi calendar, the 103rd after Aegon's crowning in Oldtown that maesters and educated people use as a reference to date the years.
The Old King died in 103 AC, after ruling for 55 years. The realm mourned him and, as agreed in the Great Council held two years before, Prince Viserys inherited the Iron Throne.
- King Jaehaerys I Targaryen dies, 69 years old, while listening from his bed Lady Alicent Hightower's reading of Barth's Unnatural History.
Titles and Appointments
- Prince Viserys Targaryen is crowned king.
- Daemon Targaryen is named master of coin. 
- ↑ 1.0 1.1 Fire & Blood, The Heirs of the Dragon - A Question of Succession.
- ↑ A Game of Thrones, Appendix.