Can someone translate this inscription, it appears the be a person's name. Thanks

Looks like a interesting sword can you post more pictures?

"Watanabe, Yoshi's sword. Keep your fingers off or I will lop off your head"

Joke. Couldn't resist.

Dave

Actually Dave you are quite close (other than the head lopping bit), I found the translation is:

Watanabe (family name), Kiyosaburo.

Dow I will post more pics when I receive it.