What does migrancy mean for personhood, and how does this flow through caring relations? Drawing on life history interviews and photo elicitation with 43 people who identify as migrants and live with cancer, here we argue for the significance of recognising complex personhood as it inflects illness and care. Drawing on social science theory around temporalities, moralities and belonging, we assemble a series of cross-cutting themes at the intersection of personhood and care; relations that transcend cultural origins yet are vividly illustrated in relation to migrant pasts. In seeking a multidimensional view of personhood, we attend to the intersecting layers of complexity that make up care in this context vis-a-vis an emphasis on forms of difference, vulnerability and otherness. In this way, we develop an approach to personhood and care that broadens the lens on migrancy and cancer, but also, one that speaks to the importance of recognition of complexity and how it shapes care more generally.