>>>those markings are quite rare i would have thought
Calico cats are indeed fairly rare, Emmie, but they're not a specific breed:
http://en.wikipedia.org/wiki/Calico_cat
(Since they're nearly always female it would be extremely hard to breed them anyway!)
>>>who's the daddy
I've no idea really but there's a tabby cat (that I simply call 'Tabs') who sneaks in here for a meal sometimes. I've no idea whether he/she is male or female (or whether he/she is neutered anyway) but it has crossed my mind that Tabs' coat does look rather like that of Tablo's ;-)