Thank you. I took that information from the 1981 book "Frank Herbert" by Timothy O’Reilly. It reports this:

"The Fremen language is adapted from colloquial Arabic, often with significant meanings. Paul's younger sister, for example, bears the name Alia. She was a member of the Prophet Mohammed's family. "

https://www.oreilly.com/tim/herbert/ch03.html

But I will remove this from the article in view your critique.