| Relationships | Role | Relationship Start | Relationship End |
| National Bancshares Corporation Of Texas | Parent | 4/29/1983 | 6/1/1990 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Nationsbank Of Texas, National Association | Buyer | 62,921,254 | Failure | 6/2/1990 | |
| Nbc Bank-Edinburg | Seller | 50,803 | Discontinued | 8/31/1987 |