Answer: Yes. He needs to disclose that he used another name for the previous business.
Step-by-step explanation:
The licensing authority needs to know any of Paul's past history that could cast any judgement on his character so as to measure his integrity as real estate associates have to abide by certain ethics.
He therefore needs to disclose that he went by the name John when he owned the lawn service company to enable the licensing authority to research his activities whilst he owned the company.