Bronte Blog informs me that the "Edinburgh Evening News reports that a permanent memorial to Dame Muriel Spark is to be created in Edinburgh":
The memorial stone in Makar's Court, just off the Royal Mile, is seen as a suitably "dignified" tribute to the Edinburgh-born writer, who died in April last year. The simple stone slab will feature either a quotation from one of Dame Muriel's novels or her autobiography.
At the Makar's Court, she will take her place alongside Rabbie Burns, Robert Louis Stevenson and Sir Walter Scott, who are also celebrated with inscriptions outside the city's Writers' Museum.(...)
The Muriel Spark Society has been planning a tribute to the author ever since her death, but has struggled to find funds.
But now, following a "generous donation" from an anonymous donor, the plans can go ahead.