Pluma Hidalgo is a town and municipality in Oaxaca in south-western Mexico. The name of "Pluma Hidalgo" was given because there is a …Pluma Hidalgo is a town and municipality in Oaxaca in south-western Mexico. The name of "Pluma Hidalgo" was given because there is a small mountain located on the municipality and up the mountain there is a cloud that seemed like a feather, in Spanish "pluma". "Hidalgo" was added because this place was founded during the Mexican War of Independence, which was begun by Miguel Hidalgo y Costilla.