Just come across this useful resource, in pdf format.
It lists men aged 18-45 in 1777 who were eligible to serve in the militia, with their occupations.
The file only includes Cleyley Hundred, and covers the parishes of Ashton, Cosgrove, Furtho, Grafton Regis, Hartwell, Hulcote, Passenham & Deanshanger, Paulerspury, Potterspury, Roade, Shutlanger, Stoke Bruerne, Wicken and Yardley Gobion.
https://www.google.it/url?sa=t&rct=j...tRNYZ_Y8Bxh5Tw
It looks as though there are other Northants lists online, but this is the only one I've looked at so far, because I was interested in some of those parishes.