The Great House of Køhler is a Danish-born pure-blood family now located in Hogsmeade, England; after the death of Harald and Linnéa Køhler and coming to know that Jocelyn and Margrethe Køhler were living in a castle (before Jocelyn moved them to Hogwarts) the Danes moved to England in Hogsmeade and the surrounding area. The Køhlers were often betrothed to keep bloodlines pure - Jocelyn to her cousin, Brynjar, and Margrethe to Ridley Chamberlain. Their cousins are the Skjeggestads, Rosalind Køhler (who they adopted not knowing this) and Esther Attaway.
|Elise Køhler||Willem Køhler|
|John Attaway||Annika Attaway||Harald Køhler||Linnéa Køhler||Ása Skjeggestad||Hjalmar Skjeggestad|
|Alfred Kirkland||Elizabeth Kirkland||Esther Attaway||Jocelyn Køhler||Margrethe Køhler||Alfwin Køhler||Brynjar Hjalmarsson|