It's been shared 13,000 times and reacted to over 100,000 times, but most of the conversation seems to be revolving around his mother Irmelin's arm hair:
The Great Arm Hair Debate of Offence 2016 is apparently raging in the comments section of the Historical Pictures Facebook page. Welcome to the internet - drop everything and let your views be heard on this pressing topic.
Anyway. It's all immaterial now.
Well done on the achievements of your offspring, Irmelin and George, and yours in raising him. We hope your arm hair, and Leo's, is exactly as long as you want it to be.