She had born Helen Mary Boyd in Guildford, Surrey, England in November 1947.
Her older sister, Pattie, had a favorite doll named Jenny, hence Helen's nickname. The first six years of Jenny's life were spent in Kenya, East Africa. In the mid-fifties, her family moved to London.
Jenny met the future drummer Mick Fleetwood of Fleetwood Mac in 1965.
Mick Fleetwood recalled the beginning of their relationship in his book, My Life and Adventures in Fleetwood Mac: "I met Jenny when I was still in the Cheynes... I'd see Jenny coming home from school, a stunning 15-year-old in white stockings. I lost my heart to her immediately. I had a massive crush on her, but was so shy I couldn't say anything to her. I knew then, at age 16, that this was the girl I was destined to marry."
Mick and Jenny's relationship was erratic for 15 years. They broke up first in the summer of 1966 while Jenny was working as a freelance model, "Well, I met someone in Rome and became involved. I told Mick when I got home and he got really upset. It was a very big breakup." In 1966, Jenny had began experimentation with marijuana and LSD and described a incident which she said arose from the experience: "One momentous day I experienced an astonishing realization, which I can now identify as a spiritual awakening. The traditional Christian beliefs I had been taught as a child crumbled as I suddenly recognized that there was no God above or hell below. God was everywhere, inside each one of us. I saw everything as a circle: life, death, and rebirth, or reincarnation."
In 1967, Jenny moved to San Francisco to be in Haight-Ashbury before returning to England the following year.
She dated folk-rock singer Donovan in 1967-1968, who wrote "Jennifer Juniper" about her while in India. Jenny and Donovan were friends but she told him she wasn't interested in having a boyfriend when he showed interest in having a romantic relationship. Jenny's on-off romance with Mick Fleetwood was off during this period.
Later she shared an apartment with Magic Alex of Apple Corps' Apple Electronics subdivision. She also worked at the Apple Boutique in London.
Upon returning to England, Jenny's relationship with Mick resumed. Jenny was very impressed with Peter Green, whom she stated "had an intensity that seemed to radiate from his body when he played." In 1969, however, Jenny observed Peter's withdrawal from the rest of the band, "...there was his idea about Fleetwood Mac being like a band of gypsies enjoying themselves by roaming the world and giving their money away to ease suffering. That idea he regarded as an inspiration that came to him and he believed in it just as he did the music for 'Albatross'. But sadly, what I then saw in Peter was that same energy and flow of creativity turn inwards, and turn into something much darker when the rest of the band, Mick especially, didn't agree with him. Peter and Mick up until that point were very close-- they loved each other-- and I don't think either really ever got over what happened."
Jenny and Mick were married in June 12, 1970 at Kiln House after Christine McVie had joined the band; they had two children, Amy Rose (January 17, 1971) and Lucy (Spring 1973).
Jenny also remembers the decline of Danny Kirwan [songwriter, singer and guitarrist of Fleetwood Mac from 1968 to 1973], "At first, Danny was like a son; he used to come and have supper with Mick and me at our flat at Benifold. He was like a little Peter Pan. Once Peter had left and they were all rehearsing at Kiln House, it was pretty stressful because they didn't know if they could make it as Fleetwood Mac on their own. Danny suddenly started having these total outbursts and tantrums that had no grounding to them at all-- a side of him would just kick in and be totally inappropriate to the situation. I think drugs and alcohol got Danny totally nuts in the end. He was just too sensitive a soul."
They moved to Los Angeles in 1974 shortly before the addition of Lindsey Buckingham and Stevie Nicks; in L.A., Jenny further explored her spiritual side. As Fleetwood Mac became more popular, Jenny fell back on drinking and cocaine to help cope with the increasing social events and pressures. The constant touring of the band led to the failure of her marriage to Mick Fleetwood and her moving back to England for a few months to stay with her sister, Pattie, who was living with Eric Clapton. Jenny later moved back to Los Angeles, moved in with Mick, and they remarried in 1976. Fleetwood Mac became even more popular with the release of Rumours, leading to more stress between Mick and Jenny and an increase in drug and alcohol use. The couple divorced again six months after Jenny sobered up with the help of an Oriental acupuncturist.
She moved back England with her daughters in 1978.
Jenny moved back England with her daughters in 1978, where she met Ian Wallace, a drummer who had played with the bands King Crimson and Snape in 1972. They married in 1984. Jenny earned her bachelor's degree in humanities at Ryokan College, then she earned her master's degree in counseling psychology, and her Ph.D. in psychology in 1989 at UCLA. She became a clinical consultant and author. She co-authored a book about music and psychology, titled Musicians in Tune (1992). In her book Jenny Boyd stated that she divided her time between Malibu, California and Surrey, England with her husband, Ian, and was a consultant to Sierra Tucson, a Californian treatment center.
Jenny and Mick's older daughter, Amy, had a son, Wolf Cassius, in 1994, and she resided in England with the baby's father, Atticus for a short time, them she moved to LA and went to live with friends Francesca Gregorini and Tatiana von Funsterberg. In 2002 Amy Fleetwood left an editorial job at Vogue to become a freelance stylist and photographer. She's got a daughter too.
Lucy Fleetwood is a hostess in Los Angeles.