here are the Banns - March 18th 1917 gives their middle names

Henry Hughes
Spouse's Name Alice Holmes
Event Type Marriage Banns
Event Date 18 Mar 1917
Event Place Rhyl, Flintshire, Wales
Event Place (Original) Rhyl
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Robert Leonard Holmes
Spouse's Name Charlotte Gwendoline Hughes
Event Type Marriage Banns
Event Date 18 Mar 1917
Event Place Rhyl, Flintshire, Wales
Event Place (Original) Rhyl