I am a DeLeon from McAllen/Mission area inSouth Texas. Do you if this is the place you are inquiring about. I have traced my family tree up to my great grandfather who was Regino DeLeon and was married to Tomas Villareal. I really dont know if he had any brothers or sisters. He was born around 1889 and died in 1968. I too am on the quest to find all relatives.