Ken Arbit wrote:
The name Yekutiel/Yekusiel is often shortened to "Kusiel" (rhymes withPronouncing the nickname Kusiel as "Kissel" seems to me pretty characteristic
of the dialect of Yiddish spoken in Galicia, where kugel is called "kigel" and
the Sukkot holiday is pronounced "Sikkis". In this area, the Hebrew name
Joshua was often rendered in Yiddish as the nickname "Shiya".
David J Ellis