https://thelawdictionary.org/fraxinetum/
In old English law. A wood of ashes; a place where ashes grow. Co. Litt. 46; Shep. Touch. 95.
fraxinetum
https://www.medievalists.net/2013/07/fraxinetum-an-islamic-frontier-state-in-tenth-century-provence/
How did a Muslim mini-state emerge on the southern coast of France in the tenth century?
tenth centuryfraxinetumislamicfrontierstate