We provide a brief account of the life and work of Jules Parrot, a significant figure in French paediatrics, about whom almost nothing has been written. We focus on his work relating to congenital syphilis, specifically reporting on the examination of a collection of bones taken at autopsy from children with congenital syphilis. The collection of bones was brought to London in 1879 by Parrot to illustrate a talk that he gave before the Pathological Society of London. Subsequently, it travelled a circuitous route to the Royal Free Hospital pathology collection, where it remained until we (GC and TW) ‘discovered’ it. The bones represent the largest assemblage of material from cases of congenital syphilis in the UK and they are important as they clearly demonstrate the skeletal lesions associated with congenital syphilis and are now irreplaceable. The bones have been identified to anatomical element and have come from a minimum of eight children, both foetuses and neonates covering the period 30–50 weeks post-conception. Radiological and micro computerised tomography examinations were carried out and three-dimensional models printed at twice life size. The models are durable and can be handled with impunity by students and others wishing to familiarise themselves with the skeletal changes shown.