Tiedemann Wealth Management has named Thaddeus Shelly III as a managing director and senior advisor. Based in Palm Beach, Fla., Shelly will be responsible for developing and maintaining client relationships. Shelly previously served as a managing director and chief executive officer of Lazard Wealth Management. Prior to joining Lazard, he was a senior managing director at Bessemer Trust and the founder and director of private client services at Legg Mason. 

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