Where is the place of first white settlement that was built in Arizona has letters ctuba it?

The place of the first white settlement in Arizona with the letters ctuba in it is Tubac. Tubac is a town in Santa Cruz County, Arizona. It is located in the Santa Cruz Valley, about 50 miles south of Tucson. Tubac was founded in 1752 by Spanish Jesuit missionaries. It is considered the first European settlement in Arizona.