Louisa has "Dansvil"--the "s" placed just above the "n" and "v" halfway between them. This is the grounds laid out at Brook House by the captured French Governor of St. Pierre, Monsieur D'anseville, while he was on parole (and subsequently in self-imposed exile) during the French Revolutionary and Napoleonic Wars and boarding with the mysterious Margaret Floyer (see Lawson 1893 , pp. 130-44).
"He spent a great deal of time and money in the ornamentation of the grounds. Walks were cut through the woods, a fish-pond was made near the house, and the immediate grounds filled with flowers. . . . In those early days, when cultivation of the roughest kind was all that could be accomplished in the vicinity of Dartmouth, 'Brook House', as the Governor's residence was called, had the admiration of all who passed by." (pp. 136, 137)
(In 1814, after Napoleon was taken the first time, D'anseville returned to France and within the year Margaret Floyer died at Brook House.) It would seem that a year after the Governor's departure, the place has lost little of its charm; for Louisa's "favourite spot" (very likely what she elsewhere refers to as her "bower") is in D'anseville Grove.