Sust. men's. Patronymic plural Spanish dynasty of the Bourbons. While the rules in grammatical pluralization demand not to pluralize the surnames, because some would be offensive or humorous ( cows and bulls ) they except it is of members of the Royal houses. Example: the Habsburgs, instead of the Habsburgs. Bourbon comes from the French Bourbon, 40 place name; a 41 place name; de Bourbon-l Archambault, commune of the canton of Moulins, Allier, Auvergne, central France region Department. Derived from the Gaulish «borva», of «Borvo» thermal deity, as there are hot springs spas in that location.