After years of speculation, the official engagement of Prince William and longtime girlfriend Kate Middleton has finally been announced. The ring (a sapphire surrounded by diamonds) also belonged to his mother, Diana. The wedding is expected to take place in the spring or summer of next year. In honor of the good news, we're looking back at other memorable royal weddings.

It’s not uncommon for sons and daughters to follow in their dad’s or mom’s footsteps – think Willow and Jaden and Ken Griffey Jr. But for three generations of a family to participate in sports, business and politics or entertainment is less common. Here’s a look at some of them.

Here is a list of the world’s Young Richest Royals.

1.Prince William, U.K.

Age: 28
Queen Elizabeth’s grandson, Currently training to become a Royal Air Force Search and Rescue Force helicopter pilot.