Ancillary adj. Subservient or subordinate, like a handmaid; auxiliary. "The Convocation of York seems to have been always considered as inferior, and even ancillary, to the greater province."
... sister Dora (whom he certainly loved as much as it was possible for him to love anything but his own poems) as a kind of tributary dependency of his genius, much as a mountain might look down on one of its ancillary spurs. ... — Among My Books • James Russell Lowell