W: (adj) lineal [Related to: line] (in a straight unbroken line of descent from parent to child) "lineal ancestors"; "lineal heirs"; "a direct descendant of the king"; "direct heredity"
W: (v) descend [Related to: descent] (come from; be connected by a relationship of blood, for example) "She was descended from an old Italian noble family"; "he comes from humble origins"