Emily Dickinson Lexicon

BERT, n.

Sax. beorht, berht; Eng. bright. This word enters into the name of many Saxon princes and noblemen; as Egbert, Sigbert. The Bertha of the northern nations was by the Greeks called Eudoxia, an equivalent word. Of the same sort were Phædrus, Epiphanius, Photius, Lampridius, Fulgentius, Illustris. [See Bright.] – Camden.