Viserys I Targaryen

Viserys I Targaryen, is an unseen character in Game of Thrones. He is not expected to appear in the series, being long dead by the time it begins.

Viserys I was the first King of his name to sit on the Iron Throne and the fifth king of the Targaryen dynasty to rule the Seven Kingdoms. He was an ancestor of Viserys and Daenerys Targaryen. He was formally styled Viserys of House Targaryen, the First of His Name, King of the Andals and the First Men, Lord of the Seven Kingdoms and Protector of the Realm.

Viserys I was the grandson of King Jaehaerys I, and father of Rhaenyra and Aegon II.

Background
Viserys I was the grandson of King Jaehaerys I. He immediately succeeded his grandfather as king because Jaehaerys I ruled for so long that his son (Viserys I's father) predeceased him.

Season 1
Viserys I is indirectly referred to when his descendant is introduced by Illyrio Mopatis as "Viserys of House Targaryen, the Third of His Name". When Eddard Stark reads through the book The Lineages and Histories of the Great Houses of the Seven Kingdoms, an entry mentioning Viserys I's descendant King Viserys II is also seen.

Season 3
Joffrey Baratheon, while not mentioning Viserys I by name, mentions that Viserys I's daughter Rhaenyra was fed to a dragon by Viserys I's son Aegon II.

In the books
In the A Song of Ice and Fire novels,