'unlawfully-claimed' originates from the combination of 'unlawful' and 'claim', where 'unlawful' means 'not conforming to, permitted by, or recognized by law' and 'claim' means 'to assert ownership or a right to something'.

'unlawful' changed from the Old English word 'unlagu', meaning 'not according to law', and 'claim' from the Old French 'clamer', meaning 'to call or cry out'.

Initially, 'unlawful' meant 'not according to law', and 'claim' meant 'to call or cry out', but over time, 'unlawfully-claimed' evolved to mean 'taken or declared without legal right'.