'different-named' is a modern English compound formed from 'different' + 'named' (past participle of 'name'), meaning literally 'having a different name'.

'different' originates from Latin via Old French ('different-' from Latin 'differens'), where the root 'differre' meant 'to carry apart, be unlike'; 'named' comes from Old English/Proto-Germanic roots for 'name' (OE 'nama', PGmc '*namô'), with past participle formation producing 'named'. These elements were compounded in more recent English to form 'different-named' (or more commonly the phrase 'differently named' / 'different name').

Initially the components respectively meant 'not the same' ('different') and 'called' ('named'); combined, they now specifically denote 'having/being given a different name' or 'known by another name'.