The Onyx Partners Team has the expertise to advise and assist with the management, growth and governance of our client’s wealth.


Chrislyn V. Stubbs

Trust Executive

Chrislyn Stubbs has over 15 years experience working in the financial services arena, providing a high calibre of service to clients and professionals globally. She has a diverse background in areas including trading, investments, pensions, compliance and new business development, focused on the HNWI and UHNWI segments and she has worked in London, UK and Geneva, Switzerland.

Ms. Stubbs earned an Associates of Arts in Law & Criminal Justice and a Bachelor’s Law degree, LLB (Hons) in International Commercial Law. She was featured as a Millennial Delegate at the 20th STEP Anniversary Caribbean Conference 2019 and was a recipient of the Bahamas’ 40 under 40 Award in 2019.


Tulio Berdu

Trust Executive

Tulio Berdu joined the Onyx Partners team in 2019 after working as a fiduciary supervisor at a major Brazilian private bank’s Bahamas-based subsidiary. As Chief Operating Officer of Onyx Partners, he is responsible for managing the daily operations and working closely with the General Manager to ensure the efficient operation of the company in service of clients.

Mr. Berdu is fluent in English, Spanish and Portuguese and holds a Bachelors Degree in Business Administration from Pontifical Catholic University of São Paulo. He is also qualified as a Certified Financial Planner (CFP) and a Trust and Estate Practitioner (TEP).


Supported by our affiliate, Caystone Solutions, Onyx Partners has an extended
team consisting of:

7 Administrators &
6 Accountants

Our team includes professionals
who are fluent in:

English, Spanish & Portuguese.

For more information call +242 397-6535 or email contact@onyxpartners.bs


Wendy Warren


Wendy Warren is the Founder and Managing Director of Caystone. Prior to establishing Caystone Solutions, Ms. Warren spent 11 years as CEO and Executive Director of the Bahamas Financial Services Board, a financial sector body that works closely with government, regulators and private industry to ensure The Bahamas provides global clients with best in class financial services. Following her time with BFSB, in 2012 Ms. Warren established Caystone, an operational family office focused on full corporate and fund administration services.

Ms. Warren has worked in a variety of roles in the fund administration, wealth management and audit fields including 8 years co-leading the establishment and operation of a leading investment funds administrator. She has worked with families and family businesses for over 25 years and her knowledge of the financial services business and community is broad, augmented by a deep understanding of The Bahamas and its legislative framework. Ms. Warren is a Chartered Accountant and holds a bachelor’s degree in Accounting from the University of Waterloo, Canada.


Julien D. Martel


Julien has over 30 years experience in the financial services industry and has worked in both Guernsey and The Bahamas where he was the Managing Director of the Bahamas office of a trust and fiduciary business with a global footprint.

He led the business while always keeping strong and close relationships with global clients, managing their highly complicated, cross-border planning needs. Julien has served as a director on a number of banks and trust companies and also spent time working as the Chief Operating Officer of a Multi Family Office.