Excalibur was the sword of legend in the story of King Arthur and the Knights of the Round Table. Historically, King Arthur was a legendary British leader who led the British defense against the Saxon invaders in the late 5th and early 6th centuries. In modern times, however, many historians believed that the details of King Arthur's story had become overly romanticized and became more of a fiction.
Still, the facts of the Latin word for Excalibur and the old man's instructions of Alex going to England, might mean that the legend of King Arthur and the knights of the round table weren't just a fairy tale.
Alex had never heard of the existence of this sword in his previous life nor someone named Geoffrey, but at least Cindy's guess may have opened a little clue about the old man's origins.
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Finally, the end of volume three, thank you for your patience. your support is much appreciated