Question: Where was the person to whom Ismaël Emelien serves as a special advisor an investment banker?

Context paragraphs:
Ken Marlin: Ken Marlin is an American investment banker, international strategist, and author of "The Marine Corps Way to Win on Wall Street: 11 Key Principles from Battlefield to Boardroom", available from St. Martin's Press in August 2016.  He is the founder and managing partner of Marlin & Associates, an award-winning boutique investment bank and strategy advisor.  He is a member of the “Market Data Hall of Fame” and, in 2011, Institutional Investor ("II"), the international publisher, named Ken as one of II’s “Tech 50”, which honored the 50 most “disruptive” figures in the financial technology sector.  In 2014, Institutional Investor again, named Marlin to their "Tech 50" as one of the 50 most influential people in the financial technology industry.  Again, he was the only investment banker on the list.  In 2015 Institutional Investor named Marlin as one of the 35 most influential people in Fintech finance.  Marlin also is a member of the Board of Directors and the Executive Committee of the Phoenix House Foundation; a Trustee and Board Member of the Madison Square Boys and Girls Club; a member of the Business Administration Board of Advisors of the University of the People; an active supporter of the Wall Street Warriors Foundation, The Marine Corps Heritage Foundation; the Hurricane Island Outward Bound School; and Outward Bound Peacekeeping.  He has been quoted frequently in the media.

Russian Market: Russian Market is a Swiss/Russian business/entertainment news blogger launched in February 2009 and based in Zurich.  Founded by an anonymous Swiss investment banker and journalist.  Russian market is reviewing the latest financial news from Zurich's "Paradeplatz" to Wall Street over the Emerging markets of Russia and China.  The feed provides and analyzes current business news and acts as an aggregator of top news stories from around the web, each with an "edgy" commentary similar to Zero Hedge and Business Insider.  Its original works have been cited by other, larger, publications such as "The Guardian" and domestic news outlets like Swiss newspapers Finews.ch or 20 minuten.  It reports on economics around the Wall Street and the financial sector in Switzerland - and is credited with bringing the controversial posts in September 2011 alleging that Swiss National Bank would set a minimum exchange rate at CHF 1.20 per euro.  The news portion of the site is written by a Swiss investment Banker with Russian origin who writes under the pseudonym "Russian Market" in English, Russian, German, and Chinese languages.  In April 2014 the blog had over 132 thousand unique followers on Twitter from Hong Kong to San Francisco.

James A. Runde: James A. Runde is a Wall Street investment banker, author and corporate director specializing in strategic and financial advice.  He is an Advisory Director and former Vice-Chairman of Morgan Stanley.  In May 2014, Runde celebrated a rare milestone on Wall Street: 40 years as an investment banker, all at the same firm.  Runde is one of America's longest-serving investment bankers at a single institution, and was honored by Morgan Stanley for his length of service as well as ongoing contributions to the firm.  Over the course of his career, he has served as a trusted advisor to many of the world's leading companies, with a focus on the transportation and infrastructure industries.  Since 2006, he has been a member of the Board of Directors of The Kroger Co., one of the nation’s largest grocery retail chains.  He has also served on the Board of Directors of Burlington Resources, a large U.S. oil and gas company as well as a trustee of The Morgan Library & Museum.

Robert McKay (American football): Robert Gordon McKay (May 3, 1887November 26, 1958) was an American football player and investment banker.  He played college football for the Harvard Crimson football team from 1908 to 1910 and was selected as a first-team All-American football player in 1908 and 1910.  He later became an investment banker in New York.

John N. Reynolds: John N. Reynolds OBE has been described in the media as a 'world class investment banker' and 'highly intelligent but aggressive'.  He has had a 20-year career in investment banking, spanning equity research, mergers and acquisitions, financial restructuring and principal investment.  He has been a top rated equity analyst, has led ground-breaking multibillion-dollar acquisitions, and has successfully originated high-return investment strategies.  Prior to becoming an investment banker John studied theology at Cambridge University.  From 2006 to 2011 he chaired the Church of England Ethical Investment Advisory Group, which advises the Church's major investment bodies on ethical and governance issues.  The combination of a successful career in investment banking and the experience of leading an influential ethical investment body gives him a unique perspective on ethical questions facing investment bankers.

Mark Boidman: Mark Boidman is an investment banker and attorney at law in the media and entertainment sector specialized in mergers and acquisitions.  Digital media industry executives and professional publications have recognized him as a leading investment banker in the media sector.  His outdoor and out of home media clients have included Outfront Media (f/k/a CBS Outdoor) in connection with its acquisition of Van Wagner’s billboard assets, as well as AMI Entertainment, Branded Cities, Cieslok Media, Clear Channel Outdoor, Fairway Media, Gas Station TV, JCDecaux, PatientPoint, RMG Networks, Titan (n/k/a Intersection), Van Wagner and Vector Media.  The acquisition by CBS Outdoor Americas of Van Wagner Communications’ major market advertising business resulted in CBS Outdoor acquiring approximately 1,100 large format billboard displays in a total of 11 US markets.  His other clients have included Cox Enterprises, DirecTV, Discovery Communications, Disney, General Atlantic, Liberty Media, Lionsgate Entertainment, Mediacom Communications (special committee,) RevZilla, Scripps Networks, Searchlight Capital, and TiVo.

Ivica Tončev: Ivica Tončev () (born November 17, 1968) is a Serbian politician, member of the Socialist Party of Serbia and special advisor to Serbian Government since 2008.  He serves as a special advisor of the First Deputy Prime minister Ivica Dačić.

Ismaël Emelien: Ismaël Emelien (born in 1987) is a French political advisor.  He is a co-founder of En Marche! , and President Emmanuel Macron's special advisor for strategy, communication and speeches.

Emmanuel Macron: Emmanuel Jean-Michel Frédéric Macron (] ; born 21 December 1977) is a French politician who is the President of France and "ex officio" Co-Prince of Andorra.  Before entering politics, he was a senior civil servant and investment banker.  Macron studied philosophy at Paris Nanterre University, completed a Master's of Public Affairs at Sciences Po, and graduated from the École nationale d'administration (ENA) in 2004.  He worked as an Inspector of Finances in the Inspectorate General of Finances (IGF), then became an investment banker at Rothschild & Cie Banque.

Matthew Pendo: Mathew Pendo is an investment banker, having worked for Merrill Lynch and Barclays before taking a position as Chief Investment Officer of the Office of Financial Stability of the United States Treasury in 2011.  After several years managing his responsibilities under the Troubled Asset Relief Program and coordinating divestiture of the portfolio, Pendo has returned to the private sector as an investment banker.

Supporting paragraphs: Ismaël Emelien Emmanuel Macron
Answer: Rothschild & Cie Banque