He married three times, his first wife was Cheryl (1964–ca.1969), his second wife was fellow folk musician Sandy Denny (1973–1978), and his third wife was Elizabeth Hurtt-Lucas (ca. Lucas died on 4 February 1989 of a heart attack in his sleep, in Sydney, aged 45.W ciągu trzynastu lat zmieniał miejsce zamieszkania ponad trzydzieści razy, gdy wreszcie rodzina osiedliła się w Tacoma w stanie Waszyngton.Uczęszczał do Kopachuck Middle School, zanim w 1989 roku ukończył Gig Harbor High School w Waszyngtonie.Lucas Australian production credits include the number-two hit single, "Solid Rock", by Goanna and its related number-two album, Spirit of Place (November 1982); and number-one hit, "I Was Only Nineteen", by Redgum and their albums, Caught in the Act (June 1983) and Frontline (August 1984).
He mainly worked as a singer-songwriter and guitarist but also produced many albums and composed for the film industry toward the end of his career.
[he] had a fierce, driving flat-picking style when playing 12-string guitar ... He also played a harmonica in a harness, a la Bob Dylan He released his first solo work in Australia, two tracks, "Old Time Religion" and "Dem Bones Gwine to Rise Again", on the Various Artists' extended play The Folk Attick Presents (1963). In late 1964 Lucas released a solo album, See That My Grave Is Kept Clean on EAST Records.
He also appeared on a compilation album called "Australian Folk Festival", which was recorded in August that year with other folk musicians, Tina Lawton, Paul Marks, Brian Mooney, Lenore Somerset and Martyn Wyndham-Read.
The band broke up in 1971 with Denny undertaking a solo career with backing from Lucas.
A follow up album had been recorded in November to December 1970 but it was abandoned until 2007, when it was finally completed by Donahue and released in September 2008 as Fotheringay 2.