Interesting.
Off topic, but do you have info on the top image used on this website? I see Donald Knuth on the right, but I’m not sure who the other two are.
Note added by moderator: this is a split thread, about identifying the various photos in the rotation of Hans Otten’s Pascal for small machines site. All the photos are of interest to computer historians!
I have a video for you, starring Niklaus Wirth (a still from this was the previous hero image, but I see Hans has updated. It’s now on this page):
As for the person in the middle (I think she needs a post here!):
Edit: I see now it’s a rotating banner - could be anything! Some nice ones though, and always a mild puzzle.
Thanks for the info. I’m not familiar with how Niklaus Wirth looks like. Hopefully I’ll recognise him better now. 
I also noticed (after another visit) that it’s a rotating top banner. Maybe an improvement to the site is to add proper alt text to the images, describing their content. Currently, the alt text all say a generic “Pascal for small machines”.