House Halleck

House Halleck was a House Major during the New Empire. It was supposedly established by Gurney Halleck, a General of Emperor Paul Atreides who later rose to Siridar Governor of Caladan and Giedi Prime which he renamed Gammu. It is unknown what happened to House Halleck after the death of Gurney Halleck who apparently had no known legitimate heirs.

Dune Encyclopedia
The Halleck Family were described as a House Minor, a family of Imperial Minstels and instrument makers from Chusuk and Giedi Prime. Though it is not explicitly mentioned it seems possible that the House's name derived from the House of Halleck Corrino and traced its origins back to Halleck I.