Not he alone shall suffer what wit can make heavy and vengeance bitter; but those that are germane to him, though removed fifty times, shall all come under the hangman: which, though it be great pity, yet it is necessary.
There are no more uses of "germane" in the play.
Show samples from other sources
Any sound that was not germane to the night would make them alert.
John Steinbeck -- The Pearl
Blomkvist had inspected the negatives and decided that close-ups of cute children’s faces or pictures of a painter appearing on stage were simply not germane to his objective.