I first used that name in LOTRO some 6 years ago.
As some you remember in old games you had oportunity to use names max 4 letter. That time I used GOD.
And later added new ending as I like what it means. Godspeed means:
From Middle English phrase God spede (“may God cause you to succeed”), from God (“god”) + spede, subjunctive of speden (“to prosper”), from Old English spēdan, from spēd (“success”) (see speed).
An expression of good will when addressing someone, typically someone about to go on a journey or a daring endeavor.