Mohanned bin Saud Al-Rasheed is a Riyadh-based lawyer. Is he a member
of the Saudi royal family?

Hello and thanks for the interesting question.

The Saudi Royal Family do trace their heritage back to the 18th
century cheiftan "Saud", which may seem to suggest that the "bin Saud"
part of Mohanned bin Saud Al-Rasheed's name means that he is a
decendent of Saud.

However, this is not the case. Saud was merely the first name of his
father. No where on the web is he documented as being a member of the
royal family.  Mohanned bin Saud Al-Rasheed is also not listed as a
member of the Saudi Royal Family in the below directory or the family
tree. There are no members with a grandfather named al-Rasheed nor the
first name Mohanned.

Here is the directory:
http://www.datarabia.com/royals/search.asp

Here is the royal family tree:
http://www.datarabia.com/royals/familytree.asp

Additional Information on the Saudi Royal Family
http://www.desert-voice.net/new_page_3.htm

Google Search Strategy

"Mohanned bin Saud Al-Rasheed" 
://www.google.com/search?hl=en&lr=&ie=UTF-8&q=%22Mohanned+bin+Saud+Al-Rasheed%22+&btnG=Search

saudi royal family
://www.google.com/search?hl=en&ie=UTF-8&q=saudi+royal+family&btnG=Google+Search

Thanks again for the question. Please let me know if you need any
clarification of my response.

Regards,
Anthony (adiloren-ga)