This may only be a very simple plaque and it seems to be an afterthought tucked away on the side of a building right next to the rendering that faces the prevailing wind, but what a great name for a cottage.
The carved letterform looks as if it was carved by someone who understood letters but was not a time-served stone mason. Maybe it's an apprentice piece, that would be a suitable solution to the mystery. The Victorians had a love for small detail, even on an Artisan's cottage.
Perseverance, a motto for all of us, not just anglers.