Agrippina the Younger outraged by Claudius' adoption of Nero and his choice of Nero as successor, instead of choosing his own son Britannicus. Nero and Octavia were married on June 9, 53. Claudius later repented of marrying Agrippina and adopting Nero, began to favor Britannicus, and started preparing him for the throne. His actions allegedly gave Agrippina a motive to eliminate Claudius. The ancient sources say she poisoned Claudius on October 13, 54 with a plate of deadly mushrooms at a banquet, thus enabling Nero to quickly take the throne as emperor. Accounts vary wildly with regard to this private incident and according
Rudolf II, Holy Roman Emperor on 18 July 1552. He was the eldest son and successor of Maximilian II, Holy Roman Emperor, King of Bohemia, and King of Hungary and Croatia; his mother was Maria of Spain, a daughter of Charles V and Isabella of Portugal. He was the elder brother of Matthias who was to succeed him as king of Bohemia and Holy Roman Emperor. Rudolf spent eight formative years, from age 11 to 19 (1563–1571), in Spain, at the court of his maternal uncle Philip II. After his return to Vienna, his father was concerned about Rudolf's aloof and stiff manner, typical of