Samuru was a samurai. Several Japanese anime characters are named Samuru and are samurai. It is also turkish for otter.
"Su samuru"(literal translation: water sable) is the Turkish for otter. Turkish is an agglutinative language, that last u is actually a possessive affix and doesn't make sense when the word is by itself.
It's interesting, results are not so far from what I want. I'll give it a look for my next searchs.