“Wapens op schilderijen van Jeroen Bosch / Wapens op schilderijen van Jeroen Bosch II. De Boschhuysen” (P. Gerlach O.F.M. Cap.) 1978
[in: Brabants Heem, 30 (1978), pp. 2-9/82-88]
[Reprinted in: P.M. le Blanc (ed.), Jheronimus Bosch. Opstellen over leven en werk door drs. P. Gerlach, O.F.M. Cap. Vereniging ‘Gerlach-Publikaties’-SDU uitgeverij, ’s-Hertogenbosch-’s-Gravenhage, 1988, pp. 81-90]
[Also mentioned in Gibson 1983: 83 (E65/E66)]
In 1568 a Bosch triptych was confiscated from the possessions of Jehan de Casembroot. The triptych showed the coats of arms of the Bronckhorst and Bosschuyse families. This triptych was possibly the Adoration of the Magi triptych which is today in the Prado.
Gerlach offers a number of archival data regarding these two families but he did not find a Peter van Bronckhorst nor an Agnes Bosschuyse (the supposed commissioners of the Prado triptych). Gerlach concludes that we can be sure that Bosch painted a triptych for the noble Bronckhorst-Bosschuyse family which had ties with the Fraternity of Our Lady. Gerlach seems to believe that this triptych was the same as the Prado triptych, but the evidence for this is lacking.
Recent research has rendered this Gerlach article largely obsolete. For the updated facts see Renson 2001 and Duquenne 2004.