What this source establishes
Besse’s typescript (Moumas, p.842, footnote 1) on the family’s standing: under the Nabob of Arcot the Bilderbecks had farmed the revenue (tiryais/dues) of Nangunery — revenue-farmers, which is what makes the benefactor tradition materially plausible. In copyright: quoted, not reproduced.
This is as much of the book as this site prints. It is named in full in the bibliography below.