This data set contains 27 completed poems from 71 participants (9 cohort groups), explanations of the poets’ creative process, and source material (original words) from people living with rare dementia and carers who responded to a series of three prompts over a 12 week period. Data was collected between 2021-2022 as part of the Electronic Poems Project within the Rare Dementia Support Impact Study. Study Abstract Purpose: Poetry can convey sensory and emotional information and is a way to understand complex phenomena. This study explored the development of a new co-created form of poetic inquiry to further comprehend the lived experiences of people affected by 6 rarer dementias. These include young onset, inherited and non-memory-led conditions that are often misunderstood and subsequently lack care and support. Methods: Three prompts over about 12 weeks were sent electronically to 71 international participants to solicit responses, which were thematically analysed, creating 27 group poems. Follow-up surveys using content analysis assessed participant experiences producing and responding to the poems. Results: Analysis resulted in 3 - 4 themes per prompt, conveying very difficult aspects of lived experience, often owing to atypical symptoms, younger onset, misunderstandings by professionals and others, lack of support pathways, tremendous future uncertainty and a continuous struggle to adapt. Survey results found 74% had a positive experience contributing to the poems whilst 84% responded positively to the completed poems. Conclusions: As one of the largest empirical poetry-based studies that we are aware of, this novel, accessible approach of co-creating group poems yielded support for poetry as an arts-based qualitative research methodology that was able to gather substantial in-depth information about the experiences and needs of those affected by rarer dementias. Survey responses provided additional significant support for this methodological approach. Future research is suggested. Funding: The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This work is part of the Rare Dementia Support Impact Project (The impact of multicomponent support groups for those living with rare dementias, (ES/S010467/1)) and is funded jointly by Economic and Social Research Council, part of UK Research and Innovation, and the National Institute for Health Research (UK). The views expressed are those of the authors and not necessarily those of the ESRC, UKRI, the NIHR or the Department of Health and Social Care. Rare Dementia Support is generously supported by the National Brain Appeal https://www.nationalbrainappeal.org/). Lead investigator S. J. Crutch and co-investigators: J. Stott, P. M. Camic, G. Windle, R. Tudor-Edwards, Z. Hoare, M.P. Sullivan and R. McKee-Jackson.