Question: What is the date of death of Keanolani's mother?
Sentence (from "Keanolani"): She was the illegitimate daughter of Abigail Maheha and King Kamehameha V, who reigned from 1863 to 1872, and was born during a liaison between the two when they were students at the Chiefs' Children's School (later renamed the Royal School),
Relevant evidence: Yes