Texas is a large state. It has more land than any state but Alaska and more people than any state but California. It also has one of the highest growth rates by percentage.
"Williams" is the third most common surname in the United States, behind just Smith and Johnson.
"Jody" is pretty regularly in the top 1000 most common given names and during the 1960s and 1970s was among the top two or three hundred for newborns of both sexes.
I happen to have an uncommon last name (fewer than 2 people per 100,000 in the US) and have run across a number of people with the same given name and surname in the US. At one time I lived in a city of about 120,000 people and there was another with the same first and last name across town who was, as far as I know, no near relation. I had moved from well outside that area.