'aldermanical' originates from 'Old English', specifically the word 'aldormann', where 'aldor' meant 'elder' and 'mann' meant 'man'.

'aldormann' transformed into the Middle English word 'alderman', and eventually became the modern English word 'aldermanical'.

Initially, it meant 'elder man', but over time it evolved into its current meaning of 'relating to an alderman'.