Royal Spanish Surnames

[Hellfire]

Hello,

I was reading this site and many more and it occured to me that the only prominent family surnames are Habsburg and Bourbon. I understand that out of all the royal families, they stand out among only a handful. But were there other royal surnames that also need mentioning? For example what were Ferdinand and Isabel's surname respectively?

[Luke]

Well generally they both were of the House of Trastamara which was the generally used patronym.  

More correctly, they belonged to the family of Ivrea-Burgundy.  

[Luke]

Further to my last post, if you want to see a geneological tree of the House of Burgundy-Ivrea, Paul Theroff has an amazing file on them located here:

http://www.angelfire.com/realm/gotha/index.html

Scroll down to Burgundy-Ivrea and if you click on that link, it downloads a word processed file that is fascinating.

[Bernardino]

I believe that the Castillian-Aragonese-Spanish Royal Family used no surname until the Habsburgs...

The Spanish Habsburgs were called 'de Austria'...

Names as Trastamara, Avis, Burgundy-Ivrea, etc, were given by genealogists to denominate a lineage, a family or a dynasty...they don't correspond to surnames as we understand...