i don’t recall any specific story but H Beam Piper wrote numerous stories about settlement and the difficulties it might encounter. Could be in his body of work.
I still think that they were the basis for the Ewoks. Given the time period in which the scripts were written, I don't see how Lucas could have been ignorant of Piper's work.
Garde la Foi, mes amis! Nous nous sommes les sauveurs de la République! Maintenant et Toujours!
(Keep the Faith, my friends! We are the saviors of the Republic! Now and Forever!)
LonePalm, le Républicain du verre cassé (The Broken Glass Republican)