ok sorted…
so
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Load GERBERS in the gerberviewer and export all the key layers to PCBnew
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open in PCBnew and clean up any remnant - for me the GERBER have boardoutline on all layers so there were rogue tracks
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reposition around the origin by simply taking the average max-y,miny… max-x,minx
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export outline as DXF
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start footprint and load the DXF onto the silk and fab layer
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for each hole in PCBnew, not the xy and place a PTH at the same location
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add courtyard and save

As an added bonus, due to this footprint existing and the GERBER PCB, a bit of messing around and a freecad model was created, including the pin headers

thanks all
