This article is from the rec.heraldry FAQ, by Gordon Findlay (gordon@chmeds.ac.nz) and Francois Velde (velde@heraldica.org) with numerous contributions by others.
See question 3.
"Unless you pay them thousands of dollars, the companies [in the malls,
and in advertisements in many publications] won't do that research;
they'll just look in their books under your surname, and tell you what's
there.
All that will tell you is that there is (or once was) a person sharing
Byour surname who bore arms. Suppose your name were "Jones"; it wouldn't
be very significant to learn that there was once an English armiger
named "Jones".
- Josh Mittleman (mittle@panix.com)
 
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