Pierre is the French word for Peter. After you point out these ambassadors were appointed the same day, and realizing they would soon be sailing across the Atlantic I couldn't help but think of the old Sunday School song that goes like this...

Peter, James and John in a sailboat...
Out on the deep blue sea...

Maybe I'm the only one who ever heard or remembers that little tune but maybe Jeff Davis was singing it while waving goodbye to them LOL!