Sister and wife of King Mausolus (reigned 377/376–353/352) of Caria, in southwestern Anatolia, and sole ruler for about three years after the king’s death (EB). She is renowned for her extraordinary grief at the death of her husband (and brother) Mausolus. She is said to have mixed his ashes in her daily drink, and to have gradually pined away during the two years that she survived him (Wikipedia). She built for her husband, in his capital at Halicarnassus (modern Bodrum, Turkey), the tomb called the Mausoleum, which was considered one of the Seven Wonders of the World (EB).
Artemisia was also known as a botanist and medical researcher; Artemisia, a plant genus, is named after her (EB).
I just thought it was interesting where the word “mausoleum” came from. Also, I read in another article that Egyptian brothers and sisters sometimes married, but the Greeks were appalled by the practice.