Ditto Anneza’s comment about choosing a slightly more feminine name than the ones in your example. I take it you require the girl name to start with P?Pax Pandora Pearl Persia Poet / Poe Primrose Penrose Paige Paisley Paris Piper Portia Poppy Presley (could be either)
I would suggest McCoy, Marshall and Petal, or McCoy, Marshall and Phoebe. Otherwise, your combos could just as well apply to boy, boy and boy, or boy, boy and domestic pet.