My Family came from Laguna gloria Los Lidios, En La Parroquia de San Isidro, Villa de Artiaga, Coahila. That's South of Saltillo. My Grandfather and Grandmother Doroteo & Rafaela Ganoa, are registerd on line 117 page 46, of the 1st. book of Marrages dated 1873. there are a lots of Gaona' in the same book and the area, The Prist said, Toda La Gaonera lives en Los Lidios.
As for the "Gauna" my mother said that in the early 1900 a COUSIN, went to work in San Marcos, TX. and to this day 2003
(I have spoken to them)they have gone to visit the Family
in mexico and are told to Correct thier name. So that, COUSIN became "Gauna" because that's how the Grigo, pronounce it. If you ask a Gauna, He/She has family around San Marcos, Texas.