We are passionate about helping people and teams discover
their best selves.
We are passionate about helping families and their enterprises.
We are passionate about helping families and their enterprises
Leonora Zilkha Williamson, MBA, PCC
Founder and CEO
Leonora Zilkha Williamson is a Family Enterprise Coach and Professor at Vanderbilt University, where she teaches Negotiation, Corporate Social Responsibility and Family Business. In 2019 she founded Platinum Rule Advisors, a consulting firm devoted to coaching, facilitation, training, workshops and retreats for families, family businesses and family offices. As a college professor and family coach, she particularly loves working with NextGens, and with senior family members on defining their legacy.
Her career includes roles at Brown Brothers Harriman, J.P. Morgan, the Boston Consulting Group, and Estée Lauder, which is publicly-traded and family-controlled. A graduate of Princeton University and Harvard Business School, she is also a certified coach (PCC) through the International Coach Federation, and a member of the Harvard Institute of Coaching, the Forbes Coaches Council, and Marshall Goldsmith’s 100 Coaches. She was named the #1 Executive Coach in Nashville in 2021 and 2022 by Influence Digest, and is a 2022 Nashville Business Journal Women of Influence.
Leonora’s interest in family enterprise is deeply personal. Her maternal grandfather was a Trust and Estates lawyer, and her father’s family has owned various businesses for over a century. Today, her family is the majority owner of Maine-based boat companies Sabre Yachts and Back Cove Yachts, and Leonora serves on the boards. Family enterprise has been the backdrop for much of her professional experience – especially at Brown Brothers and Estee Lauder. When she transitioned from corporate work and investing to coaching nearly a decade ago, her calling to work with families was clear.
Leonora has lived in 8 countries, speaks 5 languages, and carries 2 passports. She was a founding partner of women’s angel investment group The JumpFund. She has served on dozens of boards, both nonprofit and for-profit. She is a frequent speaker on Negotiation and family business topics. She lives in Nashville with her two children and a golden retriever named Sally.
Certifications: ICF PCC, Newfield Certified Coach, IeQ9 Accredited Enneagram Practitioner, Fearless Organization Certified Practitioner, Certified TDS Advanced Practitioner
Additional certifications of completion: Global Team Coaching Institute - Certified Team Coach, Coaches Rising - Neuroscience of Change, Coaches Rising - Somatic Coaching, Vanderbilt Osher Center for Integrative Medicine Certified Mindfulness Facilitator, Marshall Goldsmith 100 Coaches, Forbes Coaches Council, NBJ Women of Influence
Angel Bowling Horn
She began teaching elementary aged children and planned to work with kids the rest of her career. One summer, her life took a different turn when she accepted an offer to teach a new Electronic Medical Records system to staff at a large regional medical center. It was there that she found her true calling in adult education and corporate training.
Angel lives in rural eastern Kentucky, literally surrounded by hilltops of home and family. She is married to her high school sweetheart and they have two teenage children. She enjoys reading, cooking, and traveling, and in the summer you can generally find her soaking up the sun while boating and fishing on the lake.
She is often called on for administrative consultation in her father’s business. In addition to a close-knit family and extended family, Angel’s faith in God is very important to her. She’s a longstanding member of her church and is frequently working in her community through church events and by teaching the ladies in Sunday School. In her spare time, she loves to bake cookies for her many nieces and nephews.
Leonora Zilkha Williamson
MBA, PCC
Founder and CEO
Leonora Zilkha Williamson is a Family Enterprise Coach and Professor at Vanderbilt University, where she teaches Negotiation, Corporate Social Responsibility and Family Business. In 2019 she founded Platinum Rule Advisors, a consulting firm devoted to coaching, facilitation, training, workshops and retreats for families, family businesses and family offices. As a college professor and family coach, she particularly loves working with NextGens, and with senior family members on defining their legacy.
Her career includes roles at Brown Brothers Harriman, J.P. Morgan, the Boston Consulting Group, and Estée Lauder, which is publicly-traded and family-controlled. A graduate of Princeton University and Harvard Business School, she is also a certified coach (PCC) through the International Coach Federation, and a member of the Harvard Institute of Coaching, the Forbes Coaches Council, and Marshall Goldsmith’s 100 Coaches. She was named the #1 Executive Coach in Nashville in 2021 and 2022 by Influence Digest, and is a 2022 Nashville Business Journal Women of Influence.
Leonora’s interest in family enterprise is deeply personal. Her maternal grandfather was a Trust and Estates lawyer, and her father’s family has owned various businesses for over a century. Today, her family is the majority owner of Maine-based boat companies Sabre Yachts and Back Cove Yachts, and Leonora serves on the boards. Family enterprise has been the backdrop for much of her professional experience – especially at Brown Brothers and Estee Lauder. When she transitioned from corporate work and investing to coaching nearly a decade ago, her calling to work with families was clear.
Leonora has lived in 8 countries, speaks 5 languages, and carries 2 passports. She was a founding partner of women’s angel investment group The JumpFund. She has served on dozens of boards, both nonprofit and for-profit. She is a frequent speaker on Negotiation and family business topics. She lives in Nashville with her two children and a golden retriever named Sally.
Certifications: ICF PCC, Newfield Certified Coach, IeQ9 Accredited Enneagram Practitioner, Fearless Organization Certified Practitioner, Certified TDS Advanced Practitioner
Additional certifications of completion: Global Team Coaching Institute - Certified Team Coach, Coaches Rising - Neuroscience of Change, Coaches Rising - Somatic Coaching, Vanderbilt Osher Center for Integrative Medicine Certified Mindfulness Facilitator, Marshall Goldsmith 100 Coaches, Forbes Coaches Council, NBJ Women of Influence
Angel Bowling Horn
Angel Bowling Horn loves working with people and helping them learn and grow. She’s especially fond of leadership development through transformational learnings. She is a graduate of Morehead State University where she obtained her undergraduate in Education and later returned for graduate classes in Adult and Higher Education.
She began teaching elementary aged children and planned to work with kids the rest of her career. One summer, her life took a different turn when she accepted an offer to teach a new Electronic Medical Records system to staff at a large regional medical center. It was there that she found her true calling in adult education and corporate training.
Angel lives in rural eastern Kentucky, literally surrounded by hilltops of home and family. She is married to her high school sweetheart and they have two teenage children. She enjoys reading, cooking, and traveling, and in the summer you can generally find her soaking up the sun while boating and fishing on the lake.
She is often called on for administrative consultation in her father’s business. In addition to a close-knit family and extended family, Angel’s faith in God is very important to her. She’s a longstanding member of her church and is frequently working in her community through church events and by teaching the ladies in Sunday School. In her spare time, she loves to bake cookies for her many nieces and nephews.
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