Question: What delegate to the Convention of 1836 was the oldest to sign the Texas Declaration of Independence, one of its five authors, and the namesake of a North Texas county and city?
Answer: Collin McKinney. Born in 1766, he was seventy years old when he attended the Convention of 1836 at Washington-on-the-Brazos. He is credited with insisting that counties in North Texas should be drawn with straight lines. Collin County and the city of McKinney are named after him.