I made a few more tweaks to the web site view. It's still not where I want it, but it's better than it was. I've posted the pros and cons of hosted websites before so I'll not repeat myself - again.
The (useless) camera info is gone. This referred to the camera I use to capture the image, not the antique camera used to make that image. Unfortunately, ancient film cameras did not record metadata like modern digital cameras. Working out which wooden camera Mr Beattie used for each photo is not something I am going to attempt. But all the cameras will be on display when I open a museum. (no cat out of the bag there I hope)
Over on the right of each photo, you will see the Title in grey text (generally a 4 digit number, occasionally with a letter prefix and/or suffix) which relates to the original Beattie's negative number. (e.g. 28g, the "g" means glass negative). That is the number we refer to the photo by. Don't ever quote any other number to me, it probably won't make sense.
The numbering on the thumbnails is gone. Very pleased to get rid of that, the extra numbers confused the heck out of everyone including me. You now just press the right and left controls to browse through the photos. If you are at the first photo, there is no left. If you are at the last photo, there is no right. If your device has a touch screen (tablet, phone etc) you can swipe rather than hit the buttons.
Under the Title is the Caption (in white text), which is the name of the photo or its description. (e.g. "Man on the bike, Elizabeth Street c1914"). This is there so you can search for photos of something you are interested in. (e.g. Elizabeth Street)
Then below that is "Categories and keywords". I finally found out how to fill in the "Category", "Subcategory" and "Subcategory Detail" boxes. These have been empty for years. That's how long it took me to find out how to use them. Anyway, these fields aren't as useful as you might think and really only help Google find images. The categories are pre-set and can't be changed. Like I said, not really useful. But I now have data in there. Just please no one complain that I have silly categories, because they are not my categories. I have to have this box showing as that's the only place the keywords show up. So no categories box, no keywords. And I do use keywords and they are useful. The thing that I can't display yet is the star rating of each photo. So I'll tag the photos with the keywords "3star" and "5star". Soon.
I got rid of more overlay information. And generally cleaned up the look. I'm aiming to make the viewing experience as clean and easy as possible, within the limits of a hosted web site. You came here to see photos, not pop-up information.
Thank you for your suggestions, I have to hang onto them until I design my own site. I think I have pushed the hosted site as far as it goes.