My friend's last name is Hilley.

The Hilleys are a talented group of musicians.

The Hillerys are a famous family in town.

Hillery is a common surname in some English-speaking countries.

The Hillens are a family of talented musicians.

My friend's last name is Hillen.

The Hillebrands are a close-knit family.

My friend's last name is Hillebrand.

The hillclimb was challenging, but the view from the top was worth it.

The hillclimbs in this area are known for their challenging terrain.