... Tidmarsh and Titchmarsh contain the Anglo-Saxon names Tidda and Ticca. Moor also originally had the meaning morass (e.g. in Sedgemoor), as Ger. Moor still has, so that Fenimore is pleonastic. The northern form is Muir, as in Muirhead. Moss was similarly used in the north; cf. moss-trooper and Solway Moss, but the surname Moss is generally for Moses (Chapter IX). From slough we get the names Slow, Slowley, and Sloman (also perhaps a nickname), with which we may compare Moorman and Mossman. This seems to be also the most usual meaning of Slack or Slagg, ... — The Romance of Names • Ernest Weekley
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