Ichabod is a fictional character (Ichabod Crane .. Washingtom Irving) ...
Yes, that is where Washington Irving got the name!
From Wikipedia:
“In the masoretic version of the Books of Samuel, his name is said to be a reference to the fact that the glory is departed from Israel, either in reference to the death of his father, or of Eli, or a reference to the loss of the Ark. The Septuagint, however, states that his name was a complaint: woe to the glory of Israel. The Codex Vaticanus refers to him as ouai barchaboth, i.e. as I Bar Chabod - I, son of Chabod or No, son of Glory. According to textual scholars[2], this section of the Book of Samuel, the sanctuaries source, derives from a fairly late source compared with other parts, and hence this justification of his name may simply be a folk etymology.”
So actually, I was incorrect. It was related to the capture of the Ark by the Philistines rather than the departure of God from the temple.