Felt and his wife, Audrey, who died in 1984, had two children, Joan (born circa 1944) and Mark. Joan, who had earned two degrees from Stanford University and won a Fulbright Scholarship, in the 1970s joined a commune and, according the Vanity Fair article by John D. O'Connor revealing Felt's secret, gave birth to her son on camera for a documentary, The Birth of Ludi. Joan had three sons, Will (aka Ludi) Felt "(born 1974); Robbie Jones (born circa 1979); and Nick Jones (born circa 1981). Nick Jones was a schoolmate of O'Connor's daughter and they met at a party. Joan teaches Spanish at Sonoma State University and Santa Rosa Junior College.
Joan Felt has never been married.
"circa"? WTH?