The Butler of a Victorian Inventor

1812, twelve years after the dawn of the 19th century, and one century after the first steam engine was built, and even though it's not on point, it ushers in a new age. With this new age comes a new technology, the air ship, no! not those giant metal cans or over sized balloons, I'm talking about ships that were born to sail the sky.
At the head of this new technology is William B. Levitase, whom is a French/English scientist and inventor that is ahead of his time and thus made the dream of sailing the sky a reality. He was personally knighted by King William IV, and invited on many occasions to both King William's and later Queen Victoria's social gatherings.
This inventor has also created other life changing luxuries and utilities, such as the "autonomic pigeon", the "self driving cart" and an early iteration of both a screw and nail gun. There are many more in store within his mind, workshop, and home, which all happen to reside in the same three story mansion sitting pretty on what is now Parliament Hill London.
Our story isn't about him though, at least not entirely, it's about his old head butler, Coryan, and his raising of a successor for when he dies. You see Coryan is not only a butler whom has served his master since the day he was born, he also is the one who protects, and oversees, his master and fellow staff member's utmost safety, from within the mansion and without. As he feels his life drawing closer to the end every day, he searches from the depths of London's docks and sewers, to the highest crenelations of Saint Paul's (though lets hope nobody is up there) to find the perfect one who can serve and protect the ones who are closer than family to him and his heart.