In 1870-72, John Marius Wilson's Imperial Gazetteer of England and Wales described Leighfield like this:
LEIGHFIELD-FOREST, an extra-parochial tract in Uppingham district, Rutland; 2½ miles W of Manton r.. station, and 3½ SW of Oakham. Acres, 1,500. Real property, £3,232. Pop., 40. The manor belongs to George Finch, Esq.
A Vision of Britain through Time includes a large library of local statistics for administrative units. For the best overall sense of how the area containing Leighfield has changed, please see our redistricted information for the modern district of Rutland. More detailed statistical data are available under Units and statistics, which includes both administrative units covering Leighfield and units named after it.
GB Historical GIS / University of Portsmouth, History of Leighfield in Rutland | Map and description, A Vision of Britain through Time.
Date accessed: 27th March 2015
Click here for more detailed advice on finding places within A Vision of Britain through Time, and maybe some references to other places called "Leighfield".