Generous
late 16th century: via Old French from Latin generosus ‘noble, magnanimous’, from genus, gener- ‘stock, race’. The original sense was ‘of noble birth’, hence ‘characteristic of noble birth, courageous, magnanimous, not mean’.
wiktionary
From Middle French genereux, and its source, Latin generōsus(“of noble birth”), from genus(“race, stock”).
etymonline
generous (adj.)
1580s, "of noble birth," from French généreux (14c.), from Latin generosus "of noble birth," figuratively "magnanimous, generous," from genus (genitive generis) "race, stock" (from PIE root *gene- "give birth, beget," with derivatives referring to procreation and familial and tribal groups). Secondary senses of "unselfish" (1690s) and "plentiful" (1610s) in English were present in French and in Latin. Related: Generously; generousness.