# Corporate Lineage Corporate lineage tracks how people, products, intellectual property, brands, and technical practices persist through acquisitions, divestitures, renaming, and organizational succession. ## Notebook evidence PDF pages 17–19 of [[Scanned_20260730-1825]] sketch several unfinished lineages: Plantronics → Poly → HP; Anders Hejlsberg → Borland → Microsoft; and Commodore/Borland/AT&T branches whose precise personal links remain unresolved. ## Evidentiary boundary Brand succession, employee movement, product lineage, and corporate ownership are different relationships. A diagram or adjacency is a research lead until the particular edge is independently supported. ## Source - [[Scanned_20260730-1825]], PDF pages 17–19.