1) Some trees have Benjamin Hubert as the father of Charles Chambers Hubbard.
2) Charles lived in Mexico (at least part time) from 1885 to the early 1920s. Found only one record connecting him to Mexico.
Douglas Hubbard had a 1.13% DNA match with a Jack Hubert on 23andme.
1860 Census had Hubert with a 1 year old son name Charles living in Clay Texas