Shakespeare Reference in The Uncle From Rome

It seems that nearly everything I read these days contains at least one Shakespeare reference. I just finished reading a novel titled The Uncle From Rome, written by Joseph Caldwell, and approximately sixty pages from the end found this reference to Shakespeare: "They seemed more stunned than nervous, and looking at them now, Michael wondered if some exhortation might help, some show of encouragement, of confidence. The speech Shakespeare wrote Henry V at the battle of Agincourt suggested itself, but Michael felt instinctively that they were all best left alone" (p. 229).