There was, to begin with, a combination use of the various servants, the butler, gardener, laundress, and maids.
Frank Cowperwood employed a governess for his children.

The butler was really not a butler in the best sense.

He was Henry Cowperwood's private servitor.

But he could carve and preside, and he could be used in either house as occasion warranted.

There was also a hostler and a coachman for the joint stable.