indeed have been conceived at Wesendonck's cottage in the last week of April 1857, but Good Friday that year fell on 10 April, when the Wagners were still living at Zeltweg 13 in Zürich. If the prose sketch which Wagner mentions in Mein Leben was accurately dated (and most of Wagner's surviving papers are dated), it could settle the issue once and for all, but unfortunately it has not survived.

Wagner did not resume work on Parsifal for eight years, during which time he completed Tristan und Isolde