Thanks Chris – I think we’re getting close to solving this. The ‘foreach’ loop above is strangely putting out the date of the page where the mashup resides. I would like for it to show the date of the POI posts instead. Apologies if I was not clear earlier: I create individual Posts for each POI, and use a Page to show the mashup by running shortcode query on particular category.
[mashup show="query" show_query="posts_per_page=-1&category_name=jack-bates" poilist="true" marker_title="marker" marker_body="marker" width="100%" height="400" tooltips="true"]
If it helps, the link to sample Page of the mashup follows: http://rigspot.net/rig/jack-bates/