Thousands of pilgrims have travelled to see the “incorrupt” remains of the body of Sister Wilhelmina Lancaster, which were yesterday placed inside a glass case inside the monastery she founded in Missouri.

Sister Wilhelmina Lancaster died aged 95 four years ago but when exhumed by the Benedictine Sisters of Mary on April 28 in Gower, her body and habit, which lay in a simple wooden coffin, were surprisingly intact.

The sisters said that their original intention was to keep the discovery quiet, but after a private email mentioning the news mistakenly went public, it "began to spread like wildfire".