My friend's last name is Blaus.

The blaubok was a species of antelope that went extinct in the 18th century.

There are many blauboks in the wildlife reserve.

The Blauvelts are a prominent family in the town.

My friend's last name is Blauvelt.

The Blausers are a group of talented musicians.

My friend's last name is Blauser.

The Blausteins are a prominent family in the town.

My friend's last name is Blaustein.

My friend's last name is Blauschild.