It is probably a Japanese name. I found this on Yahoo's answers: "The most common kanji for the name is 売子, which has a kind of odd connotation, with the kanji for 'to sell,' and child. Perhaps "Sold child?" It's definitely odd." Another meaning I found on Google: "sales staff, occupation".
However according to an old Japanese dictionary, another meaning of Japanese uri can be "melon" or "looking alike". Japanese Ko means "child". So the name could mean "watermelonchild". The common Japanes name Uriko-hime means "a girl born from a melon" (sometimes mentioned: "melon princess").