I may have information about the Coos County Garlands you are looking for. Family lived in Jackson, N.H., Lancaster, N.H., Whitefield, N.H.
Ebenezer (Eben) m. Abigail Chase. He was born 2 July 1843 or 1844 in Conway, N.H. Sons Eben Hebert, Adelbert E., Sydney, Perley, Alvah; daughters Florence Abigail and Clara.
Eben's parents Ephraim and Sarah Garland.
Have information on a Garland book available in New Hampshire State Library.
Hope this helps!