A particularly successful form of multi-stakeholder cooperative is the Italian social cooperative, of which some 11,000 exist.  1 Type A social cooperatives bring together providers and beneficiaries of a social service as members.
The sport of Quidditch gets its name from Queerditch Marsh, the location of the first recorded game. A witch by the name of Gertie Keddle lived on the edge of the marsh around the year 1050 and recorded what she saw in a diary that survives to this day.
Lockhart wrote a promotional blurb for Quidditch Through the Ages (QA). Family. Mother: a witch, who considered Gilderoy her favourite child. Father: a Muggle. Siblings: two older sisters, both Squibs. Skills. Lockhart perfected the Memory Charm, which he used to take credit for the exploits of other, more talented, witches and wizards.