I looked at several forum trying to decide where to enter this information.In noticed at least one person who mentioned Hardy County, so this is it.
In the book "Allegheny Passage, Churches and Families, West MARVA District, Church of the Brethren, 1752-1990" by Emmert F. Bittinger, is the following information on this family:
"The Haaz (Haasz, Haas, Hass, Hause, Horse) Family - Peter and Henry Haaz were early settlers on the South Branch before 1750.The earliest rendering of the surname in land records is Haaz.For example, on Aug. 17, 1758, Peter Haaz transferred to Hannah Haaz for twenty-five pounds, 370 acres of land on the South Fork of the Potomac, being part of Lot No. G (Chalkley, III, 352).The name was often rendered Horse or Hause by the English-speaking clerks recording such transactions at the courthouse.The Horse spelling was made by the clerk who recorded the appraisement of the estate of Christian Doscher (Dosher) who was apprently killed by Indians in 1757 (Chalkley, III, 53).The name is spelled similarly in a note give to Peter Haas by Roger Dyer (ancestor of one of my friends) and which was recorded at the appraisement of Roger Dyer's estate following Dyer's death around 1758 or 1759 (Chalkley, III, 55)."
"The estate of Henry Haaz (Horse) was in the hands of the court during the years of 1763 and 1764.Sarah Haaz was the widow and executor, and she had married Robert Davis, to whom she conveyed the plantation in 1764.Henry Haaz had been killed around 1758, for on May 20 of that year, the court appointed Matthew Patton as guardian to 'Hanna Hause, orphan of Henry Hause' (Chalkley, III, 49)."(I believe Roger Dyer was killed in the massacre at Ft. Seybert, Henry Haaz might have been also.)
"The relationship of Henry Haaz to Peter Haaz is unknown and the relationships of Henry and peter to the Haaz family of Lancaster County, PA, have not been (my copy ends here).