Not in Spain, my dear friend. This is something that bothers me at times. I mean, in English, Lady Jane Grey was "Queen Jane", here in Spain we talk about Juana I.
Joan the Mad in Spanish is Juana I la Loca, the same way many other monarchs which haven't been followed by other monarchs with the same name have the number: Luis I, Urraca I, José I, Amadeo I, etc.
I suppose it is a different tradition!