Just watching PDE and it made me check Oliver's inbreeding coefficient and he has indeed got a lot of Homerbrent in him. Mainly on his maternal side, but a little on the paternal also.
The average Cavalier has an inbreeding coefficient of 5.2% and Oliver is 4.7% so not too bad I guess.
Has anyone else checked their dogs coefficient?

UK Kennel Club website tells you what your pedigree dog's COI is.