Again every prince has the right to, and in fact still has, a throne room and throne in his palace. This is not for his own use, but for that of the Pope should he elect to pay him a visit. In the hall of a Roman palace a shield emblazoned with the family arms may be seen affixed to the wall. In a prince's house it will be surmounted by a canopy, beside it should stand the historic umbrella and cushion. Four marquesses and these only the marquesses Patrizi, Theodoli, Costaguti and Cavalieri enjoy the princes' right to the canopy above their shield and are hence called the _marchesi di baldacchino_. A good deal of natural confusion exists in the mind of the foreigner with regard to the different ranks and the distribution of titles in the Italian peerage. These in fact follow no general rule but depend in each case upon the patent of creation. Princely titles conferred by the Holy Roman Empire affect every member of the family equally; titles conferred by the Pope, on the other hand, are as a rule restricted to the head of the family only. Thus in the Colonna family every member is a prince or princess; amongst the Ruspoli, a papal creation, only the head of the eldest branch is legally a prince. In these latter cases however it is usual to give the eldest son one of the other family titles upon his marriage, and the same with the second son. Such an act is in the father's option, but he is obliged to notify the assumption of the title to the civil authorities. In the same way a certain amount of latitude is allowed him as to the title he uses himself or grants to his sons. Prince Gaetani, for example, prefers to be known by the older title in his family, that of Duke of Sermoneta, bestowing that of Prince di Caserta upon his eldest son. The titles _Don_ and _Donna_ are only correct for the sons and daughters of princes and of the four _marchesi di baldacchino_, though they are often used for all the children of marquesses. In the same way, the distribution of the other titles of Marquess, Count or Baron amongst the various members of the family depends upon the terms of the original patent. In some cases every member bears the title, in others the head of the family only. Collaterals of a house often take the style _Giovanni dei Principi N----_, or _dei Conti N----_ as the case might be; "John of the Princes So-and-so," or "of the Counts So-and-so." The distinction again between the patrician and the noble is one that is not understood by the foreigner. A patrician belongs by ancestral prescriptive right to the governing class of his province. The names of the patricians are balloted annually, and one of the number is chosen as Prior or Governor of the province. He is in fact and history of senatorial rank. Among the districts of Italy some have and some have not a patriciate. Spoleto possesses one, but Todi, next to it, has never had one.