Question: Which high chiefess served as a prominent lady of the Hawaiian royal court under Kamehameha V?
Context: ʻAkahi (died October 8, 1877) was a high chiefess and female landholder of the Kingdom of Hawaii.  Also known as "Akahi-a-Pauwelua" or "Akahi-a-Kaleiwohi", she was named after her great-grandmother Akahi-a-Kuleana.  ʻAkahi was also the name of Akahi-a-Kuleana, the mother of 15th-century Hawaiian king ʻUmi-a-Līloa.  She inherited vast landholdings which later became part of the Bernice Pauahi Bishop Estate, which now funds the Kamehameha Schools. Elizabeth Keawepoʻoʻole Sumner Chapman Achuck Lapana (December 1850 – February 22, 1911) was a Hawaiian high chiefess during the Kingdom of Hawaii and lady-in-waiting of Princess Likelike.  An accomplished Hawaiian composer, she composed the popular Hawaiian love song "Sanoe" with Queen Liliʻuokalani, which was about a love affair in the Hawaiian royal court in the 1870s.  Her Hawaiian name "Keawepoʻoʻole" literally means "headless Keawe." Hinakaimauliʻawa (also spelled as Hina-kai-mauli-ʻawa) was an ancient Hawaiian High Chiefess, a Princess of Koʻolau Range on the island of Oahu.  She was a member of the royal house of Maweke, who was of Tahitian ancestry, and also the first cousin of very High Chiefess Nuakea of Molokai. Jane Lahilahi Young Kaʻ eo (May 1813 – January 12, 1862) was a Hawaiian high chiefess and a daughter of John Young Olohana, the royal advisor of Kamehameha I. Mele Kaʻauʻamokuokamānele or Kamānele (c. 1814 – May 7, 1834) was a high chiefess of the Kingdom of Hawaii and the betrothed bride of King Kamehameha III.  Her early death prevented the marriage from occurring.  Her Hawaiian name Kamānele means "the sedan chair". Nancy Wahinekapu Sumner (March 9, 1839 – January 10, 1895) was a high chiefess during the Kingdom of Hawaii of Hawaiian, Tahitian and English descent.  She served as lady-in-waiting of Queen Emma and was one of the most prominent ladies of the Hawaiian royal court during the reigns of Kamehameha IV and Kamehameha V. Elizabeth Peke Davis or sometimes Betty Davis (1803–1860) was a Hawaiian high chiefess, being the hapa haole daughter of Isaac Davis, the Welsh advisor of Kamehameha I, who helped him unify the island in 1810.  She was the wife of George Prince Kaumualiʻ i, also known as Humehume. Keahikuni Kekauʻōnohi (c. 1805–1851) was a Hawaiian high chiefess who was a member of the House of Kamehameha.  She was granddaughter to King Kamehameha I and one of the wives of Kamehameha II.  Her Christian name is disputed; it is given as Mikahela in the 1848 Mahele Book and as Miriam in later sources. Kānekapōlei was a Hawaiian High Chiefess, wife of Kalaniʻōpuʻu and the aunt of Kamehameha I.  She was present at the time of Captain Cook's death, calling attention to the kidnapping of her husband by Cook and his sailors.  A group of men from among those attracted to the beach to answer her calls for help grabbed Cook and stabbed him to death. Kamehameha V (1830–1872), born as Lot Kapuāiwa, reigned as monarch of the Kingdom of Hawaiʻi from 1863 to 1872.  His motto was "Onipa`a": immovable, firm, steadfast or determined; he worked diligently for his people and kingdom and was described as the last great traditional chief.  His full Hawaiian name prior to his succession was Lota Kapuāiwa Kalanimakua Aliʻiōlani Kalanikupuapaʻīkalaninui.
Answer: Nancy Wahinekapu Sumner