The Bucherts are a lovely family.

The Buchanons are a close-knit family.

My friend's last name is Buchanon.

The Buchholtzes are a close-knit family.

My friend's last name is Buchholtz.

My friend's last name is Buchner.

The Buchners are a famous family in the town.

Buchenwald was a notorious concentration camp during World War II.

The buchanosteid was a type of placoderm that belonged to the family Buchanosteidae.

The buchanosteids were ancient fish that lived during the Devonian period.