[3] In 1957, Lyndon met James Semple Kerr and after a three-year courtship, they married on 30 November 1960 in Brisbane, moving to Sydney almost immediately.
Her biggest influence[3] came from a class she enrolled both she and her husband in taught by Nikolaus Pevsner at Birkbeck College and which encouraged them both to devote their lives to architectural history and heritage conservation.
[2] In 1974, both she and her husband enrolled in Doctorate courses at the University of York, but spent the first year of their degree program carrying out architectural fieldwork in Australia.
Between August 1975 and December 1977, the couple completed their PhDs in England and then returned that same month for James to take up a position at Australian Heritage Commission in Canberra.
[1] Kerr was offered a lectureship in 1981 at the Power Institute of Fine Arts[6] and that same year she was made a member of the National Trust of Australia's Architectural Advisory Panel.
[1] Using both professional and amateur researchers, Kerr spent thirteen years working on the project, which contained nearly 2500 entries, when it was published by Oxford University Press in 1992.
[9] Kerr was elected a fellow of the Australian Academy of the Humanities in 1993 and in the mid-1990s, took a position at the University of New South Wales, as a research professor of art history.