William Tyler Olcott,
Star Lore Of All Ages — Canes Venatici…
(1911)
“ Allen states that this star was set apart in 1725 by Halley, when Astronomer Royal, as the distinct figure Cor Caroli. In China this star was known as "Chang Chen," "a seat," and three stars near the head of Asterion they called "the Three Honorary Guardians of the Heir Apparent." It is a wide double and is easily seen in a small telescope, hence it is a favourite object with amateur astronomers. ”
