Random crushes on people in Wikimedia Commons. David Nunes Carvalho was the son of a man who might be the first Jewish photographer in the US. He followed in his dad's footsteps for a time and then became (if you believe the news stories) one of the world's most accomplished handwriting, ink and paper experts, testifying in over 2000 trials including a few you've heard of. His daughter published a biography of him after his death which promoted her father's legacy.
https://en.wikipedia.org/wiki/David_Nunes_Carvalho