[Footnote 1: The epithet of Porphyrogenitus, born in the
purple, is elegantly defined by Claudian: -
Ardua privatos nescit fortuna Penates; Et regnum cum luce
dedit. Cognata potestas Excepit Tyrio venerabile pignus in
ostro.
And Ducange, in his Greek and Latin Glossaries, produces
many passages expressive of the same idea.]