FLUX LoRA of Albert Einstein, capable of generating him at various stages of his life.
Doesn't necessarily require a trigger although it was trained with albrtnstn, FLUX has a decent understanding of Albert Einstein, so if you want to force old Einstein, add it to your prompt. In general just describe a 'man' and the rest of your image, or his look and you should get his likeness.

Be sure to share your creations, as I am looking forward to see what you do with it.