This article, in the New York Times, concerning the use and misuse of a Davies coat of arms may be of interest. I will leave comment to others.*
https://www.nytimes.com/2017/05/28/business/trump-coat-of-arms.html?emc=edit_th_20170529&nl=todaysheadlines&nlid=31201427&_r=0
* I would have added a winking smiley, here, but they don’t seem to want to work for me :(