'alphonsine' originates from the name 'Alphonso', which is derived from the Germanic name 'Adalfuns', where 'adal' meant 'noble' and 'funs' meant 'ready'.

'Adalfuns' transformed into the Spanish name 'Alfonso', and eventually became the modern English adjective 'alphonsine'.

Initially, it meant 'noble and ready', but over time it evolved into its current meaning of 'relating to Alphonso'.