In 1870-72, John Marius Wilson's Imperial Gazetteer of England and Wales described Mawsley like this:
MAWSLEY, a quondam extra-parochial tract, now part of Faxton parish, Northampton; 3¼ miles S of Rothwell. Pop., 18.
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 Mawsley has changed, please see our redistricted information for the modern district of Kettering. More detailed statistical data are available under Units and statistics, which includes both administrative units covering Mawsley and units named after it.
GB Historical GIS / University of Portsmouth, History of Mawsley, in Kettering and Northamptonshire | Map and description, A Vision of Britain through Time.
Date accessed: 23rd January 2017
Click here for more detailed advice on finding places within A Vision of Britain through Time, and maybe some references to other places called "Mawsley".