[@Cojemo]

If what you're looking for isn't a canonical Heroic Spirit, I highly recommend you do some digging in Wikipedia. Google "List of cultural heroes"; there are tons of ideas, conveniently organized by country or cultural precedence.

Also, the Anime Character Database has tons of characters from all over Japanese media. It's your best way to find an appropriate look-alike for your new Servant...

...that is, if you don't want to dig too deep into Google Images. :S

EDIT: Damn, [@Seirei No Hai] ... I definitely feel you. My country was hit by two consecutive hurricanes back in September. I hope your loved ones ended up safe. :C