1911 Encyclopædia Britannica, Volume 17… (1911)
“ Collecting a large and splendid army Maximilian marched to defend his territories; but no decisive engagement had taken place when a truce was made in 1568, and the emperor continued to pay tribute to the sultan for Hungary. Meanwhile the relations between Maximilian and Philip of Spain had improved; and the emperor’s increasingly cautious and moderate attitude in religious matters was doubtless due to the fact that the death of Philip’s son, Don Carlos, had opened the way for the succession of Maximilian, or of one of his sons, to the Spanish throne. ”
