[1] The ancestor Reynier Dircss Boonebacker originally came from the Duchy of Jülich.

Members of the family included, for example, the cashier and/or proprietor of the loan bank in Wijk bij Duurstede, Culemborg, Bergen op Zoom, Buren and Tiel.

[2][3] He partnered up with Diederik Lodewijk Bennewitz to take over a well-known Dutch gold, silver and jewellery shop in 1802, the Peirolet brothers’ business.

The partners decided to part company for business reasons in 1821 and Adrianus and his son Jacques Antoine Bonebakker continued the company under the As Bonebakker & Zoon name.

The maker of this crown, which to this day is still being used during coronation ceremonies, was Theodorus Gerardus Bentvelt.