Magic Forums

When and how did the Theban alphabet come about? It's almost similar to runes in the script, just super curvy. There's a chart of it in Silver RavenWolf's Teen Witch, some places on the internet refer to it as a Witch's alphabet, someone posted a chart of it on Pinterest under Wiccan and magical stuff... I was just suddenly curious now as to how it came about, why it's used, etc. and since i was in the forums I decided to ask here instead of searching through google links.