Theadore is a distinctive boys' name in United States, ranking #10238 in 2000 with 6 recorded births. This places Theadore in the bottom 16% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2015 with 8 births ranking #9472. In 2000, approximately 1 in every 327,322 boys born was named Theadore. STABLE Recent data shows the name is currently stable.