Yeah, half the cast are the same family. The Burns family also wrote the music, did the costumes, and produced it.
There was an more or less Arthurian book published in the 1980's titled
The High Kings by Joy Chant. The author main point of influence started with Geoffrey of Monmouth's
The History of the Kings of Britain.
This is how it's described:
A storyteller in the court of King Arthur recounts the legendary tales about the adventures of the King's ancestors.
There are ten tales, nine are about Arthur's ancestors, one is about Arthur.
INTERVIEW WITH JOY CHANT
There was also an Arthurian magazine,
Avalon to Camelot.
This was it's mission statement:
About Avalon to Camelot
On the one hand, it might be simplest to share the Statement of Purpose that appeared as the first page of the first issue of Avalon to Camelot, which was published in the autumn of 1983… but that would only be part of the story.
Avalon to Camelot was a magazine whose eight issues were published between 1983 and 1987. By bringing together the scholarly and popular interest in the Arthurian legend for the first time, it was developed in an exciting creative crucible. And was staffed by a group of stalwart Arthurians - nearly all of whom volunteered their time and talents.
Avalon to Camelot