I found this image off the Gerd Arntz website in the isotype section. I needed somewhere to start. I couldn't just think of something.
This image reminded me of old coat of arms, so I found this image.
This image reminded me of coat of arms tattoos so I found this image...
All these images are related because they are practically the same image. Each one is different in its own sense though. The coat of arms traditionally is a representation of name and family. I am unsure of the isotype's purpose of representation, but I could imagine it being related to that.