Now, let's put this in perspective: the Templars, the Poor Knights of Christ (their symbol was two men on the back of the same horse), allowed this according to a primitive rule given by the Council of Troyes in 1129 (this in addition to those rules already established by Hugh de Payens previously).
In summary, I am asking if a religious order charged with poverty (remember this is long before they became the founders of the first large-scale rudimentary banking system) was allowed to have three horses per knight why are players limited (de jure, if not de facto) to only two? I recommend that at least three be allowed in order to allow players to take, at least, the traditional model of battle mount, riding or baggage mount (palfrey), and some kind of pet if the owner pleases.On Animals and Squires
51. Each knight brother may have three horses and no more without the permission of the Master, because of the great poverty which exists at the present time in the house of God and of the Temple of Solomon. To each knight brother we grant three horses and one squire, and if that squire willingly serves charity, the brother should not beat him for any sin he commits.