This from the FAQ section of Ralph's old website:

Q. What does RIZRAKLARU mean ?

A. During the idyllic summer of '67 I had moved to my ancient caravan to two fields in a place called Lower Landrine near the village of Mitchell in Cornwall. The location was named Willoughby's farm and I recorded a little piece by that name on my first album. I was happy playing my guitar all day and sharing the peaceful surroundings with "Whispering Mick" Bennett and Henry VIII, one of my oldest mates who played jug in our precarious jug band at the nearby "Folk Cottage".

Whilst I was working on another little instrumental, Henry was way down the field availing himself of the rural toilet and singing at the top of his voice. When Gus Dudgeon came to record the finished tune he asked me the title and not having thought of one, I replied; "Rural Karzi" remembering Henry's musical accompaniament to his ablutions.

After he'd stopped laughing Henry and I had explained the title's orgin he suggested an anagram, so we put the first letter last and spelt the whole thing backwards, and there you have it !!!! RIZRAKLARU !