Might this explain everything? What about Steele? Gascoigne? Or is that French? How does Hemsworth feel about the French? http://www.houseofnames.com/hassell-family-crest
You're definitely on to something with the hassell one. Is there a lot of ginger in Germanyish's culture?
tyke (n.) c.1400, "cur, mongrel," from Old Norse tik "bitch," related to Middle Low German tike. Also applied in Middle English to a low-bred or lazy man Just a thought