Passage: The king-elect then sent two Catholic councillors (Vilem Slavata of Chlum and Jaroslav Borzita of Martinice) as his representatives to Prague Castle in Prague in May 1618. Ferdinand had wanted them to administer the government in his absence. On 23 May 1618, an assembly of Protestants seized them and threw them (and also secretary Philip Fabricius) out of the palace window, which was some 21 m (69 ft) off the ground. Although injured, they survived. This event, known as the (Second) Defenestration of Prague, started the Bohemian Revolt. Soon afterward, the Bohemian conflict spread through all of the Bohemian Crown, including Bohemia, Silesia, Upper and Lower Lusatia, and Moravia. Moravia was already embroiled in a conflict between Catholics and Protestants. The religious conflict eventually spread across the whole continent of Europe and also increased the concerns of a Habsburg hegemony, involving France, Sweden, and a number of other countries.

Question: What were the names of the two Councillors?
Vilem Slavata of Chlum and Jaroslav Borzita of Martinice)