Former teen idol and Partridge Family star David Cassidy has died. He was 67.

“On behalf of the entire Cassidy family, it is with great sadness that we announce the passing of our father, our uncle, and our dear brother, David Cassidy,” his family said in a statement on Tuesday. “David died surrounded by those he loved, with joy in his heart and free from the pain that had gripped him for so long. Thank you for the abundance and support you have shown him these many years.”

TMZ first reported that Cassidy was hospitalized last week with kidney and liver failure. “There had been many family issues because of his alcoholism, but they are all reuniting in support of him,” a source told People. “He was delighted to see them.”

Here are five things you may not know about the former teen idol.

1.  He comes from interesting roots

David Cassidy David Cassidy's ancestors help found the city of Newark (Photo: Sunshine / Splash News).

According to Huffington Post, some of Cassidy's ancestors on his mother' s side founded the city of Newark in New Jersey. His father's family, meanwhile, was from New York, with his dad being half Irish and half German.

2. He and the current President go way back

Cassidy appeared on Season 4 of Celebrity Apprentice in 2011, where he feuded with Richard Hatch before getting fired the first week. But Cassidy revealed after his termination that he had actually known Trump for years.

"['Celebrity Apprentice' producers] called me and said Donald wanted me to do this. I’d met Donald a few times in the ’80s and he saw me in (the Broadway production) ‘Blood Brothers' in the ’90s," Cassidy told Las Vegas Sun. “I wouldn’t call him a friend, but I would say we knew each other."

3. He has a famous family

Most people know that Cassidy starred alongside his stepmother, Shirley Jones, on Partridge Family. But you may recognize some of his other relatives, as well. His half-brother, Patrick Cassidy, has had a lengthy acting career of his own,  appearing on shows like The Love Boat, The Nanny, and two Superman-themed series, Lois and Clark and Smallville. He also starred alongside his half-brother on the short-lived ABC Family series Ruby & The Rockits.

That show was created by another of David Cassidy's half brothers, Shaun Cassidy. Shawn also worked as an executive producer for shows like Blue Bloods and Cold Case. And David Cassidy's daughter, Katie Cassidy, plays Black Canary/Laurel Lance on the CW series Arrow.

4. His concerts were so popular that they became dangerous

In May 1974, hundreds of teenaged girls were injured during a stampede at one of Cassidy's concerts in England. One 14-year-old actually died. During another concert in Australia a few months earlier, 300 teens fainted, leading the Victoria State Health Minister to declare Cassidy a "health hazard."

5. He released "I Wrote The Songs " before Barry Manilow

While Manilow's version of the track became a huge hit, he was not the first person to perform it. Cassidy actually released the song as a single earlier in 1975, and it charted well in England. Manilow then recorded his own version that went on to win Song of the Year at the 1977 Grammys.

What is your favorite memory of David Cassidy? Let us know your take in the comments section below.