The circular base of a windmill is shown on historic charts with the annotation' Mill Stump'.

Sources include:
Historic Chart 1413_A1, RCAHMW digital collections sourced from the UK Hydrographic Office, published 1839
Historic Chart 2011_A2, RCAHMW digital collections sourced from the UK Hydrographic Office, published 1850

Maritime Officer, RCAHMW, December 2011.