The following data is extracted from Fitzwilliam, Cheshire County, New Hampshire History.
Hosea Platts, a descendent of Abel, who came from England and settled in Rindge previous to the Revolution, was born in that town. He married Nancy, daughter of Thayer Smith, of Fitzwilliam, April 16, 1831, and resided in Rindge until 1837, where two sons and two daughters were born. They then moved to Fitzwilliam and located on road 14, where seven more children were born. Of these, John A. Platts, born September 16, 1838, enlisted as a private in Co. K, 6th N. H. Vols., October 28, 1861, and served until July 15, 1865, being mustered out as a first lieutenant. He married Susie C., daughter of Christopher Crowell, of Westminster, Vt., February 73, 1864, and resided in Westminster from 1865 to 1871. He then returned to Fitzwilliam, where he now resides. He has one son and three daughters. His brother, Elijah T., served in the same company for the same length of time, and was mustered out as quarter-master sergeant. He now resides in Jaffrey. Two brothers, H. Osborne and Frank W., reside in Massachusetts; and Charles F., another brother, lives in Rindge.
Source: Fitzwilliam, Cheshire County, New Hampshire History