The name Ooms is most frequent in Noord Holland, Zuid Holland and Brabant, neer the Belgium border. The Ooms originate from the area near Rotterdam.
Look on
http://landkaart.ooms.info/ to see a more detailed picture of the 'distribution' of the Ooms as recorded in 1998 (the URL is part of the
www.ooms.cc site)
Cheers,
Marco
www.theooms.tk