If you can code, you can run them by AWS rekognition to do face recognition. It works amazingly well (you need a score >98 for a match). Where I am impressed is that it is also remarkably resilient to faces aging, and in some case identify some toddlers from an adult face. In your case if it only goes 20 years it is maybe less critical, but in my case I have photos going back to late XIX century, and good luck guessing who was that toddler without a legend!