Pertinax is this one of the varieties they used to have at Longleat?( I only ever saw it on the TV show animals park or one of it's re editing spin offs) but it was of very mixed colouring, with lots of white.
As FfBird said, yes. I am not sure of the relationship between them, if the 'tabby' was produced by the White/normal pair or if they were litter mates. With the correct genetic mix all three can occur in one Litter.
The 'tabby' has a white face and legs and a 'dilute' gingery orange/striped body, more like a Marmalade cat IMO.