Robert F. Kennedy Jr. and actress Cheryl Hines, his wife, are seen here in 2018.Emma McIntyre/Getty Images Robert F. Kennedy Jr. and his wife, actress Cheryl Hines, are worth roughly $15 million, per Forbes. The financial publication said Kennedy's 10 other siblings have diluted his claim to the family's vast fortune. Kennedy has also made millions on his own, including through his law firm and anti-vaccine advocacy. Long-shot Democratic presidential hopeful Robert F.