Blennerhasset has a possible etymology which reflects Cumbria's ethnic background rather nicely. Blen is the same as Welsh Blaen, meaning (I think) hill-farm, or something of that sort. Hasset is possibly from Old Norse, Hay(dont know how they spelt it) and Setr, meaning shieling(a hut up in the hills where you take your cows in the summer).
Penny Hasset, of course, is in Borsetshire near Ambridge, and for some unaccountable reason doesnt appear in the Oxford Dictionary of English Place Names.