Chandler Groff is Wes Genrette’s son-in-law in Outer Banks Season 5.
The series character listing identifies Groff as Wes Genrette’s son-in-law. That relationship places Groff inside the wealthy Genrette family whose history drives the Season 4 search for the amulet and Blackbeard’s treasure.
Groff’s family ties are easy to mix up because he also has a direct biological connection to JJ Maybank. He is JJ’s biological father, but his relationship to Wes is through marriage. This combination of family secrets and treasure-hunt motives makes Groff a particularly important figure in the transition from Season 4 to Season 5.