Gunther views authority as a God given position, no matter who or what belief the position holder maintains.
He may not always agree with the person in authority, but does respect that position of authority!
Gunther did not mention the castle sequence because that is something personal he used to get the farmer to open up regarding the need for protection and the disappearances!
The other phrase that Norwell Graven used in passing is something that Gunther did not repeat to the group upon returning to share the obtained information.
His purpose in not sharing the phrase at the moment was in line with not sharing every little detail of each conversation as some of the group may be bored with every minute detail and just want an overview of what transpired.
Gunther believes strongly in each individual exercising his or her own free will for the common good of society.
What is happening here is that small phrase in passing that the farmer used is gnawing at Gunther's memory to the point that he realizes that he must go talk to Mayor Ormond before any more time is wasted and before the sun sets and night falls!
Therefore Gunther will proceed to meet with Mayor Ormond either by himself or with anyone else who chooses to go with him!
It is broad daylight and probably still around midday at the latest. This is a good opportunity for some walking solitude for the young Paladin to do some praying and communing with his God on the way to Mayor Ormond's house if no one else chooses to accompany him.
If it were night time then Gunther would only proceed with the company of other adventurers, but since it is broad daylight, his Charisma is 18 and he has a 10' field of protection surrounding him, the young Paladin will proceed by himself if no one else chooses to accompany him!
