The architecture of the church, according to Historic England is a blend of "Gothic and Burgundian Romanesque styles".

The priest that served the mission in Falmouth was a Franciscan, Fr Ignatius Casemore.

In 1818, the priest was French, Abbé Jean Baptiste de la Grésille.

[4] By the 1860s, with the local Catholic population increasing, a new larger church needed to be built.

The site for the current church was bought from John Wodehouse, 1st Earl of Kimberley.

[4] In 1908, the baptistery and porch were added, according to the original design of the church by Joseph Hansom.

St Edward’s Church in Mawnan Smith has one Sunday Mass at 9:00am.