'lineage-related' is a compound of 'lineage' + 'related'. 'lineage' originates from Old French 'linage' (from Latin 'linea' meaning 'line') with the suffix '-age' forming a noun indicating a state or quality; 'related' comes from Latin 'relatus', the past participle of 'referre' (via Old French 'relater'), where 're-' meant 'back' and 'ferre/ferre' meant 'to carry'.

'lineage' passed into Middle English from Old French 'linage' and came to mean 'descent or ancestry'; 'related' developed from Latin through Old French into Middle English forms of 'relate/related'. The compound 'lineage-related' is a modern English formation that joins the noun and participial adjective.

Individually, 'lineage' originally denoted a 'line' or 'lineage/descendancy' and retained the sense of ancestry; 'related' originally meant 'brought back' (in Latin usage) but shifted to mean 'connected' or 'pertaining to'. Together the compound has the current meaning 'pertaining to ancestry or descent.'