In 1526, the Bohemian estates elected Ferdinand I of the House of Habsburg. The fervent Catholicism of its members brought them into conflict in Bohemia, and then in Prague, where Protestant ideas were gaining popularity. These problems were not pre-eminent under Holy Roman Emperor Rudolf II, elected King of Bohemia in 1576, who chose Prague as his home. He lived in the Prague Castle, where his court welcomed not only astrologers and magicians but also scientists, musicians, and artists. Rudolf was an art lover too, and Prague became the capital of European culture. This was a prosperous period for the city: famous people living there in that age include the astronomers Tycho Brahe and Johannes Kepler, the painter Arcimboldo, the alchemists Edward Kelley and John Dee, the poet Elizabeth Jane Weston, and others.