"Had good authority" is a phrase used to indicate that something is reliable or trustworthy based on the source it came from. It implies that the information or knowledge being referenced is backed by a credible and dependable source.
In a literal sense, the term "authority" refers to a person or entity with recognized expertise or knowledge in a particular field. When someone "has good authority," they possess reliable information or have access to trustworthy sources, suggesting that what they say or claim can be trusted as accurate.
The phrase can also be used to convey that an action or decision has been made with solid justification or evidence, providing assurance that the outcome or conclusion is valid or well-founded. It implies that the decision was not made lightly or arbitrarily, but rather based on sound reasoning or reliable information.
"Had good authority" is frequently used when discussing matters of fact, such as historical events, scientific findings, or legal judgments. It serves as a means to establish the credibility and validity of the information being presented, enabling listeners or readers to have confidence in its accuracy and reliability.
Overall, "had good authority" refers to having credible or well-founded sources of information, lending weight and trustworthiness to the statement, action, or decision being referred to.