Crawley.
_Cassie._--MR. M. A. LOWER (a correspondent of "N. & Q."), in his _Essays
on English Surnames_ (see vol. ii. p. 63.), quotes from a brochure on
Scottish family names. He seems, from a footnote, to be in difficulty about
the word _cassie._ May I suggest to him that it is a corruption of
"causeway?"
The "causeway" is, in Scotch towns, an usual name for a particular street;
and of a man's surname, his place of residence is a most common source of
derivation.