Found while searching for the proper spelling / origin of Murgatroyd.

"I do not know whether in those days there was only one Constable for each Township, appointed by the King or whether there was a small body of men holding office. Judging by the fact that the Constable for Midgley had the same name as the Berewick I imagine that there was indeed only one and therefore that our oldest known ancestor was the 'King's man' for the Township and consequently a powerful figure. Moor-gate-royd lies near Warley, Halifax. The secluded mansion, formerly known as "Murgateroyde" now called "Hollins", is built upon the demesne granted to the Earl of Warren by William the Norman, and is, from its families and the historic incidents connected with it, one of the most interesting of houses."

or....

In 1887 Gilbert & Sullivan brought the operetta - Ruddigore or "The Witch's Curse" to the Savoy Theatre on January 22nd for the first time.

One of the characters, Sir Roderic Murgatroyd, a "Bad Baronet of Ruddigore" had a generational curse on him: His ancestor Sir Rupert was cursed by a witch to "do one crime, or more, once every day, for ever" or face an agonising death.

So, basically the word "murgatroyd" has everything to do with a cursed existence, and unfortunate circumstances and situations.

Note, via (who assisted in my search) - be careful doing any research... if you search for "murgatroid" on Google, you get porn! (and not gay panther porn, either!)