I'm new to this site and geneology so I'm finding my way around by looking at other people's posts and found yours interesting because I'm from Lancashire and know a little about its history.
I too confine my research to what's online and free.
I recognised the place Ings because its on our route to the Lake District. I also felt that if Strickland, Cumberland was stated on an official register then its more likely to exist than not.
I think if you take a look at The Old Cumbria Gazetteer online you can find a wealth of information about all of the places you've mentioned, including Strickland (great or little), Ings, Goose Howe and several bobin Mills around your area of interest.
It's not beyond possibility that there maybe records of employees at the Mills or in their workers cottages.
If you know your ancestors religion then this will greatly narrow down your search.
People generally get buried at their families church and in Cumbria people carried their dead up and down mountain and across stream to their place of burial. Hence the prevelance of stepping stones across streams in Cumbria.
As an aside, but interesting is that when William Wordsworth lived at Dove Cottage his landlord lived at Tail End