You sir are correct! It was Larry who patrolled the Leafs blueline in the glory years, and yes the 12 game 67 playoff run was unreal and set some kind of record that may still stand. I thank you for bringing that to my attention! The Leafs had a pretty talented bunch of guys on a very deep blueline, Horton being the best of them of course. Once Hillman left Toronto with the exception of Montreal, he was always one of the better Dmen of a not very good crew on an expansion team
That said, however Hillman was in Punchs' doghouse for most of the 60s. He was, in fact, in that doghouse far more frequently than Eddie Shack ever was, and as we know the Entertainer spent a lot of time there. The only permanent seat belonged to Carl Brewer, who might be a top 10 Leafs Dman all time, Carl had so much talent.
Hillman was only twice in the Leafs opening day lineup and both times sooner or later ended up either in Rochester or Springfield, but I digress. Most often Hillman started the season in the minors, but did play a good number of games as a first call-up type of guy
The only other dman who drew Imlachs ire for bone headed mistakes in his own end was Kent Douglas, a smallish guy who had a penchant for puck watching and chasing guys around the net. And in fact may deserve a spot on that list more than Larry Hillman does, Hillman at least had some offensive flair and was a pretty rough customer.