M. P. Shiel and Anna Quindlen, are of British nationality?
M. P. Shiel Matthew Phipps Shiell (21 July 1865 – 17 February 1947) – known as M. P. Shiel – was a prolific British writer of West Indian descent. His legal surname remained "Shiell" though he adopted the shorter version as a "de facto" pen name.
Loel Guinness Loel Patrick Guinness (born 22 October 1957) is an Irish philanthropist, film producer and adventurer. He is descended from Samuel Guinness, a Dublin goldsmith (1727–1795), the younger brother of the Guinness brewery's founder Arthur Guinness. In 2010, he married the Thai woman Natanyawit Choomkomont (known as Tanya Guinness).