John Grayken

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John Grayken
Born John Patrick Grayken
June 1956 (age 62)
Cohasset, Massachusetts, US
Residence Pyrford Court, Surrey, England
Nationality Irish (formerly American)
Alma mater University of Pennsylvania
Harvard Business School
Occupation Founder and chairman, Lone Star Funds
Net worth US $6.5 billion (January 2018)[1]
Board member of Lone Star Funds, Hudson Partners
Spouse(s) Eilene Davidson
Children 4

John Patrick Grayken (born June 1956) is an American-born Irish billionaire financier, the founder and chairman of the private equity firm Lone Star Funds.[2]

Early life[edit]

John Patrick Grayken was born in June 1956,[3] and was brought up in Cohasset, Massachusetts, a suburb of Boston.[4] He received a BA degree in Economics from the University of Pennsylvania, and an MBA from the Harvard Business School in 1982.[4][2]


Grayken first worked at Morgan Stanley, before joining the Texas billionaire Robert Bass.[4]

Grayken founded Lone Star in 1995.[5]

In 1999, Grayken became an Irish citizen, "for tax purposes", renouncing his American citizenship.[6]


In March 2017, Eilene and John Grayken gave a $25 million gift to the Boston Medical Center (BMC) to create the BMC Grayken Center for Addiction Medicine.[7] The gift is the largest donation in BMC’s history.[8] While the couple usually makes their donations anonymously, they explained that they were going public this time to de-stigmatize addiction and to encourage others to do so as well.[9]

In April 2017, John P. Grayken gave a leadership gift to the Wharton School of the University of Pennsylvania to fund the Grayken Program in International Real Estate at the Wharton School.[10]

Personal life[edit]

Grayken divorced his first wife soon after he became a "tax refugee"; they reunited within a month of the final divorce decree, but divorced again six months later.[11] Grayken later married actress Eilene Davidson in London, and they have four children.[11][1]

Grayken is married to Eilene Davidson, a British theatre producer and former actress.[12][13][14][15]

As of 2015, they owned Pyrford Court, Surrey, which features prominently in the 1976 movie, The Omen.[16] Pyrford Court is a Grade II listed 15-bedroom house, built in 1910 for Rupert Guinness, 2nd Earl of Iveagh.[16] As of 2017, they live in a $70 million home in Chelsea, London, purchased through a company in Bermuda.[12][17]


  1. ^ a b "John Grayken". Forbes. Retrieved 24 January 2018. 
  2. ^ a b "John P. Grayken". Lone Star Funds. Retrieved 15 March 2017. 
  3. ^ "LONE STAR MANAGEMENT EUROPE LIMITED". Companies House. Retrieved 29 July 2015. 
  4. ^ a b c Strasburg, Jenny (30 July 2008). "Lone Star's Splash". WSJ. Retrieved 29 July 2015. 
  5. ^ "Company Overview of Lone Star Funds". Bloomberg. Retrieved 15 March 2017. 
  6. ^ "Who are the eight Irish billionaires?". Retrieved 17 March 2018. 
  7. ^ "Record $25 Million Gift from Grayken Family Advances Boston Medical Center's Leadership in Treating and Preventing Opioid Use Disorder". BMC. Retrieved 15 March 2017. 
  8. ^ Moses, Sue-Lynn. "Out of the "Philanthropic Shadows." As the Toll from Opioids Grows, Who's Giving for Addiction Medicine?". Retrieved 24 July 2017. The Grayken’s donation is the largest gift received by the Boston Medical Center to date. 
  9. ^ Pfeiffer, Sacha. "$25m gift to Boston Medical Center will help launch opioid center". Boston Globe. Retrieved 15 March 2017. 
  10. ^ "Grayken Program in International Real Estate at the Wharton School Creates New Opportunities in Global Real Estate Education". Wharton University of Pennsylvania. Retrieved 23 April 2017. 
  11. ^ a b Vardi, Nathan. "The Billionaire Banker In The Shadows". Retrieved 17 March 2018. 
  12. ^ a b Goldstein, Matthew (28 July 2017). "Private Equity Giant Lone Star Shakes Up North American Ranks". Retrieved 17 March 2018 – via 
  13. ^ "Council of Overseers - Huntington Theatre Company". Retrieved 17 March 2018. 
  14. ^ "About us –". Retrieved 17 March 2018. 
  15. ^ "Producer Eilene Davidson: 'British actors are the best in the world'". 5 May 2017. Retrieved 17 March 2018. 
  16. ^ a b "The omen for private equity baron Grayken". 1 March 2015. Retrieved 29 July 2015. 
  17. ^ " - Connecting People Through News". Retrieved 17 March 2018. 

External links[edit]