Tansy reappears in "Rosamund's Castle", once again set at Washington and Kentisbury/Arundel, and "Jandy Mac Comes Back" is also set mainly at Kentisbury. Bill and Patch as newly-weds appear in "Song of the Abbey"; the scenes in which they appear are set at Kentisbury, although the main action of the book takes place at The Abbey in Oxfordshire. These characters are all mentioned in several books in the main Abbey Series published and set after "Rosamund's Tuckshop". The Quellyn/Woodend Series provides an awkward problem of internal chronology within Oxenham's various book series. The main Abbey Series can be dated to within a year or two by events in the real world that are mentioned in "Girls of the Hamlet Club", although it is recognised that there are anachronisms in the Retrospective Series. But in "The Girl Who Wouldn't Make Friends" we are introduced to Robin (Robertina Brent, later Quellyn) and Gwyneth Morgan (later Lloyd) as twelve-year-olds; although the story starts in the London suburbs, most of the action takes place at 'Quellyn' and Nefyn on the Llŷn Peninsula in North Wales. The next part of their story is told in "Rosamund's Tuckshop" and "Rosamund's Castle", both in the main Abbey Series when they are seventeen or so, about five years later in 'Abbey Time', but which were published eighteen and nineteen years later respectively. These two books are set at 'Wood End School' in Washington, Sussex. Robin's romance and marriage are described in "Robins in the Abbey", published in 1947, and set mainly in Oxfordshire at 'The Abbey' and at 'Quellyn', but in 1957 Oxenham returned to Robin's school career, and produced "New Girls at Wood End", a book about Robin's time as Head Girl, set in the spring following "Rosamund's Castle". The world of 1909, in which 'motors' can be driven across fields and through gated lanes by a twelve-year-old Gwyneth, and where a telegram is brought from the post office in the nearest town by bicycle, contrasts starkly with the air crash that features in "Robins in the Abbey" and the car accident and BBC news bulletins of "New Girls at Wood End" – and with the ownership and use of the telephone in the latter two titles as a normal and common feature.