There are three place names called Labut in the Czech Republic.
One is 36 miles east of Praha, another is 160 miles east of
Praha, and the third is located 84 miles WSW of Praha.

What else do you know about Labut ?

Before WWI, Slovakia was part of Upper-Hungary (Felvidék) and
part of Austro-Hungarian Monarchy (1867-1918) and earlier the
Austrian Empire.
Hungarian names were used for towns and counties

Czech-Bohemia was an Austrian Crownland and also part of the
Austro-Hungarian Monarchy(1867-1918). Here German and Czech names
were used because this region was under Austrian control.

In 1920, a newly-formed country of Czechoslovakia was created from the
Austrian Crownlands (Bohemia, Moravia and Austrian-Silesia) and a
portion of Upper-Hungary (Slovakia and Karpatho-Ukraine).

Many Polish surnames end in -ski or -cki.
In older records you sometimes read -sky (before spelling rules
were adapted); but in recent times tendency to insist on -ski.
Probably a possessive affix added to name which evolved from person's
characteristics (such as 'tall, short, etc.), occupation, or place
of residence.
In Czech and Slovak, the -sky is akin to the Polish -ski, while -cky
is similar to Polish -cki.

Ondrisek is probably a surname derived from the first name Andrew (E)
Andras (H) Andrej/Ondrej (S) and means something like little Andy.