380--385) discusses the marriage of Frederic II.

with the daughter of John of Brienne, and the double union of the crowns of Naples and Jerusalem.] [Footnote 42: Acropolita, c.27.The historian was at that time a boy, and educated at Constantinople.

In 1233, when he was eleven years old, his father broke the Latin chain, left a splendid fortune, and escaped to the Greek court of Nice, where his son was raised to the highest honors.] [Footnote 421: John de Brienne, elected emperor 1229, wasted two years in preparations, and did not arrive at Constantinople till 1231.

Two years more glided away in inglorious inaction; he then made some ineffective warlike expeditions.

Constantinople was not besieged till 1234 .-- M.] [Footnote 43: Philip Mouskes, bishop of Tournay, (A.D.