Yes. Evelyn Waugh.
It is this search for truth and, more importantly, the solid reality of the cross which holds the novel together. The postmodern trickery is not designed, as in The Name of the Rose, to cast doubt on the Church's understanding of the world, or even on the very nature of truth itself, but to tease the reader into asking the right questions, into becoming a pilgrim.
Indeed it is only if we take this postmodern mixture of playfulness and hardheadedness seriously that we will be able to appreciate Helena. What Waugh gives us is not history and certainly not hagiography but a carefully constructed (and funny) novel about a piece of "wood which has endured". As Helena herself put it: “just at this moment when everyone is forgetting it and chattering about the hypostatic union, there’s a solid chunk of wood waiting for them to have their silly heads knocked against.”