In March, 1164,
Peter of Barcelona,
archbishop of Tyre, died, and within a month Frederick was appointed to replace him, at the request of
King Amalric. He accompanied Amalric on the expedition against
Egypt in 1167, with his own "rather distinguished retinue", according to William. Frederick suffered from
dysentery in Egypt after drinking from the
Nile and soon returned home. In August of that year he presided over the marriage of Amalric to the
Byzantine princess
Maria Comnena. A few days later, Frederick appointed William
archdeacon of Tyre, but in 1169 he accused the archdeacon probably of receiving to great a salary for his post, which William had probably gained through his friendship with King Amalric. William went to Rome to defend himself against the charges.
Embassy to the West In 1169, after the failure of Amalric's invasion of Egypt, the king sent an embassy to Europe to obtain financial aid for the struggling
Crusader States and to call for a new
crusade. The first embassy, led by Patriarch Amalric and Archbishop
Ernesius, was caught in a storm in the Mediterranean and was forced to return home. King Amalric then sent a second embassy under Archbishop Frederick, Bishop John of
Banyas and Guibert, the
preceptor of the
Knights Hospitaller. In July they arrived at Rome and met with
Pope Alexander III, but none of the monarchs of Europe were willing to assist the far-away Crusader kingdom:
Louis VII of France and
Henry II of England were already occupied in warring against each other, but Frederick persuaded Henry to donate money and make a pilgrimage later.
Frederick Barbarossa had been excommunicated by Alexander III in 1160 and was currently at war with the Papacy, so no support was forthcoming from him either. The embassy was also meant to find a suitable husband for the then eleven-year-old
Sibylla, the king's daughter, who might one day reign, her brother
Baldwin being suspected of having contracted
leprosy. In France, Frederick persuaded Count
Stephen I of Sancerre and brother-in-law of Louis VII, to come to the east and marry Sibylla. The embassy returned to Jerusalem in 1171, along with Stephen and Duke
Hugh III of Burgundy, who came as a representative of Louis VII. It is unknown what Frederick offered the young count, but it seems he never got it, for he returned to France without marrying the princess. ==Death==