Discussed in testimony as Wendi Adelson's oldest brother, a New York doctor from whom she was estranged; he did not appear or testify.
Robert Adelson

Donna Adelson's oldest son, a New York physician who testified for the State at her 2025 trial and was mentioned only in passing at the 2022 Magbanua retrial.
About
Robert Adelson, Donna Adelson’s son and Wendi Adelson’s oldest brother, was initially present in the record only through other witnesses’ descriptions of family relationships. Wendi identified him as a New York doctor from whom she was estranged and discussed the family’s initial objection to, and later reconciliation over, his marriage; another witness said Robert was rarely discussed. Robert later testified for the State at Donna’s trial, describing her as the family leader, characterizing her involvement in her adult children’s lives as controlling, and recounting her involvement in Wendi’s divorce. He also said Donna instructed him not to speak with law enforcement after Dan Markel’s killing and dismissed the significance of his having already spoken with the FBI. Cross-examination tested his firsthand knowledge through his infrequent visits and phone contact and elicited that Donna had attributed the advice to family friend and attorney Michael Weinstein.
Trial Record (11)
Testifying for the State on Day 2, Robert Adelson described Donna Adelson's role in the family, her involvement in Wendi Adelson's divorce, and their conversations after Dan Markel's killing. Cross-examination tested the scope of his firsthand knowledge and addressed the reported source of advice not to speak with police.
Day 2
Day 6
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Day 9
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