Baldwin Holdings Unlimited is listed on most of Apple's major Irish subsidiaries as a member and owner.
Apple Operations International, for example, lists in an annual report filed in 2015 that there are 726,059 shares of the company. Apple Inc holds 700,053, Apple UK holds 26,005, and Baldwin Holdings Unlimited holds one share.
Baldwin Holdings Unlimited is a nominee shareholder with a Virgin Islands address, and the New York Times reported in 2012 that Peter Oppenheimer, former Apple CFO, was the company's only listed director.
From the Times:
"Moreover, the second Irish subsidiary — the “Double” — allowed other profits to flow to tax-free companies in the Caribbean. Apple has assigned partial ownership of its Irish subsidiaries to Baldwin Holdings Unlimited in the British Virgin Islands, a tax haven, according to documents filed there and in Ireland."
Baldwin apples are "coarse, textured and juicy but lack flavor," according to the U.K. National Fruit Collection. They ship well and are hearty.