Hi Peter
I've had a look at the microfilm of St Georges Hanover Square marriage register for December 11th 1870
William Farley, of full age, bachelor, Police Constable of Piccadilly, father Charles Farley, Labourer
Mary Ann Brooks, full age, spinster, no occupation, of Hyde Park Place, father James Brooks, Labourer
William Farley, signed his name
now here's the interesting bit
Mary Ann signed her name Brooks after she scribbled out something beginning with G, most probably Gaston based on your earlier posts
but with the passage of time, who knows why.
Dawn