A benefactor; an individual who donates to charity or some cause.
somebody who backs, supports or champions an underlying cause, task or establishment.
people instrumental into the creation or growth of some thing.
someone who creates articles posted in a newspaper, magazine, web book, etc.
One who, or what, adds
one that contributes; one who provides or will pay cash or other things of worth to a standard stock or fund; one who helps with effecting a common function; especially, one who furnishes literary product to a journal or magazine, or any other combined literary work.
2. A person who will pay tribute; a tributary.
somebody who adds (or promises to contribute) a sum of income
a writer whose tasks are published in a newspaper or magazine or within a novel