This small commemorative wooden picture frame holds small rose leaves 'From the Grave of John Wesley'. It is a typical item of 'Wesleyana' of the 1800s, when any item with a connection to John Wesley, however small, was greatly esteemed by Wesleyan Methodists. As such, it is an interesting piece of social history.
Wesley's grave is a stone monument which, in the 1800s, was surrounded by metal railings. It is unlikely that a rosebush grew on or near the grave. These leaves may have been taken from a rose put onto Wesley's monument, or a rose bush in the graveyard itself.