In addition to the NAS freq you found, here is what I found in the two counties he mentioned, plus another.
San Patrico County:
Mathis EMS (Conventional Freq)
Mathis Emergency Services
(San Pat AEGIS System)
Aransas County:
Aransas County Volunteer Fire Paging and Dispatching Channels(Including Lamar & Holiday Beach VFD's)
He also listed Bayside, which is actually in
Refugio County. There is no specific listing for Bayside, but it's likely at least some of the Fire traffic related to Bayside would be on either the 158.820 County Fire Dispatch, or 155.49, the County EMS Channel.
Now, sure, there are no listings for Taft or Fulton FD's, but that's where the DB could benefit from users in that area who can determine which freqs those departments are using and submit that data to the DB.