No. 17 O’Connor Heirs

587,000 acres (up 7,000 acres)
Irish immigrant Thomas O’Connor, a.k.a. “The Texas Cattle King,” was awarded a 4,428-acre land grant in 1834 near present-day Victoria, and the family never looked back. The O’Connors still run cattle on the Coastal Plains, and the O’Connor Field is considered one of Texas’s most prolific.
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