Question: When did Lydia Welti-Escher's father die?
Sentence (from "Lydia Welti-Escher"): Lydia Welti Escher, (née Lydia Escher, 10 July 1858 in Zürich-Enge – 12 December 1891 in Genève-Champel) was a Swiss patron of the arts and the daughter of Augusta Escher-Uebel (1838–1864) and Alfred Escher (1819–1882), among others the founder of the Gotthardbahn.
Relevant evidence: Yes