However, you can try these options:
* Leave it as "Escamilla": This is the most accurate and widely understood option.
* Phonetically pronounce it: You could try pronouncing it as "Ess-ka-mee-ya", which is similar to the Spanish pronunciation.
* Explain the origin: You could say something like "Escamilla, c'est un nom espagnol" ("Escamilla, it's a Spanish name").
Ultimately, the best way to say "Escamilla" in French will depend on the context and your audience.