The Ricketsons are a well-known family in the town.

My friend's last name is Rickel.

Rickels is a common surname in Germany.

The Rickels family is planning a reunion.

The Rickersons are a lovely family.

Rickerson is a common surname in the United States.

Rickabaugh is a common surname in the United States.

The Rickabaughs are a close-knit family.

The rickettsiologist conducted extensive research on tick-borne diseases.

The patient was diagnosed with rickettsiaemic fever.