Black Moor is an area marked in my 1930s road atlas of south Lancs, in the triangle between Black Moor Road near Mawdesley, Meadow Lane and Daub Lane, but I cannot see anything closer to Croston. Black Moor Hall and Black Moor Farm are named on this road, about half a mile west of the cross roads at Mawdesley, but just to confuse us, there is also Blackmoor Farm and Blackmoor House on Meadow Lane which ran approx NW to SE from Rufford towards Bispham Green. [note the different spellings!]
Perhaps the family had earlier links at Croston.
A