Paul McCartney.Photo: Ian Gavan/Getty

Paul McCartneypaid tribute to his brother-in-law John Eastman after his recent death.
On Thursday, McCartney, 80,posted to Instagramto share that Eastman, who was the brother of McCartney’s late wife Linda McCartney, has died.
“My dear brother-in-law, John Eastman, has passed away. Having known each other for over 50 years it is an extremely sad time for me, and our families,” McCartney wrote on Instagram.
“John was a great man. One of the nicest and smartest people I have had the good luck to have known in my life,” he continued. “Not only did he help me massively in my business dealings as my lawyer but as a friend he was hard to beat.”
John Eastman and Paul McCartney.Paul McCartney/Instagram

“His sense of humour always shone through in everything he did and his devotion to his family was supreme,” McCartney wrote on Instagram.
Eastman entered McCartney’s life when he married Linda,who died in 1998 from breast cancer at age 58. Eastman and his father, Lee Eastman, began representing McCartney during the Beatles' breakup and continued on to represent the ex-Beatle throughout his solo career, according to a biography on Eastman fromNew York University.
“We had so many fun times together through the years, but when the time came to be serious, he was unbeatable,” McCartney wrote on Instagram Thursday.
“There is so much more that can be said of his incredible qualities, but words can hardly describe his passion for life and our affection for this amazing man,” he continued. “He will be sorely missed but always held dear in the hearts of those of us who knew and loved him. See ya Johnny!”
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In June, McCartney welcomed special guestsBruce SpringsteenandJon Bon Jovionstage for a jam session during the final tour date of his Got Back Tour at New Jersey’s Metlife Stadium just before McCartney celebrated his 80th birthday.
Paul McCartney.Pierre Suu/Getty

Onstage, McCartney referred to Springsteen’s appearance as a “birthday present to myself.” Before performing “Glory Days,” theBorn in the U.S.A.rocker wished the former Beatle “80 more years of glory days.”
That night, Bon Jovi, balloons in hand, came onstage tosing “Happy Birthday” to McCartney, and he returned at the end of the concertalong with Springsteen to sing “The End"from the Beatles’Abbey Roadalbum.
source: people.com