Mapp and Lucia by E F Benson
Though it was nearly a year since her husband's death, Emmeline Lucas (universally known to her friends as Lucia) still wore the deepest and most uncompromising mourning.
I'd never heard of E F Benson but liked the back blurb of this book. The beginning seems unsurprising to me in light of it being a classic. And the fact that Lucia is wearing mourning straightaway situates you back in history.