Prior to the Texas Revolution, empresario James Power constructed his house on the northern tip of Live Oak Peninsula at the site of the former Spanish fort of Aránzazu, which guarded Copano Bay to the west.
[1] After the founding of Corpus Christi by former Aransas City-resident Henry Kinney, the port was no longer the westernmost in Texas.
The town was named after the newly elected President Mirabeau B. Lamar, whom Byrne lobbied to, to relocate the Aransas City customhouse.
[1] The events mirrored the political feud between Lamar, who was supported by Byrne, and former President Sam Houston, whom Power backed.
Power moved on to Copano,[3] and by 1847, Aransas City was largely abandoned and no longer had a functioning government.