What does HWM mean in Dutch names?

In Dutch names, "HWM" stands for "Heerlijkheid van Walcheren en Middelburg," referring to historical noble titles or land holdings. It is often used to denote a noble or aristocratic lineage associated with specific regions in the Netherlands. Additionally, it can indicate membership in the Dutch nobility or signify a particular honorific. The use of such abbreviations is more common in formal contexts or genealogical records.