"If truth be told, the Hand had not seemed quite himself for some times," Pycelle said.
I encountered this sentence from the Game of Throne. I have looked up the dictionaries and googled, but I cannot find the meaning of seem oneself. Does this whole sentence mean that what others said about the death of the Hand is not consistent with the characteristic of the Hand?
This whole paragraph is
"If truth be told, the Hand had not seemed quite himself for some times," Pycelle said. "We had sat together on council many a year, he and I, and the signs were there to read, but I put them down to the great burdens he had borne so faithfully for so long. Those broad shoulders were weighed down by all the cares of the realm, and more besides. His son was ever sickly, and his lady wife so anxious that she would scarcely let the boy out of here sight. It was enough to weary even a strong man, and the Lord Jon was not young. Small wonder if he seemed melancholy and tired. Or so I thought at the time. Yet now I am less certain." He gave a ponderous shake of his head.