I am a Ben Achour from Tunisia, my father's family are originally from the island of Djerba in Tunisia. My father did some research about our family. Most elders of the family have passed away so he couldn't gather all the info.
But they say that the ancestors fled Andalusia, Spain to North Africa, some went to Morocco, some to Egypt, Some to Lybia, some to Algeria and some to Tunisia. We are one big family :)