Giant's Bread by Agatha Christie

A memorial service was held for Vernon in the little old church at Abbotsford under the shadows of Abbots Puissants, as it had been held for his father. The two last of the Deyres were not to lie in the family vault. One in South Africa, one in France.

In Nell's memory afterwards the proceedings seemed shadowed by the monumental bulk of Mrs. Levinne -- a vast matriarchal figure dwarfing everything else. She herself had to bite her lips not to laugh hysterically. The whole thing was so funny somehow -- so unlike Vernon.