They may be coming from the last few members of the House of David - well known years ago for their barnstorming baseball teams.
See the link
http://www.houseofdavidmuseum.org/sports/index.htm
Scroll down about 2/3 of the way for a Helmar ad.
Also, they seem to be coming from Michigan, albeit the east side of the state, rather
than Benton Harbor on the west where the House of David is/was.