If you are of Italian heritage, you may wish to consider the following tartans:

http://www.clansmanitalia.com/

And this web site about the Italian community in Scotland, has a few more articles, links, etc. about this tartan (and others) that you might like to peruse:

http://www.scotsitalian.com/culture.htm

There is also a tartan for the City of Rome:

http://www.caledoniansocietyofrome.org/html/Tartan.html

Cheers,

Todd