Help! Missing family photos from icloud/atv3

The sad story starts here ... two months ago we had a break-in and they stole my MBA, my iMac and my iPad. Lost about a years worth of family photos (luckily I had backups for older photos).

However I switched on my ATV3 the other day (which they missed) and I can see some of my "lost" photos appearing.

So either these are cached on my ATV3 or being loaded from my Photo Stream.

I have a new MBP and although that has my photostream, it doesn't load older photos.

So I have two potential courses of action...

a) somehow get the photos off my ATV3 ... which doesnt seem possible as there is no jailbreak option.

b) somehow access the photos from icloud/photostream ... which doesn't seem possible as it doesnt load older photos.

Anyone out there found a workaround for this situation? I would really love to have these family photos back.