Proper noun
Cheshvan
(Judaism) The second month of the civil year and the eighth month of the ecclesiastical year in the Jewish calendar, after Tishrei and before Kislev.
Menashe, the Tribal ruler of Cheshvan, demonstrated humility and grace by accepting his younger brother Ephraim’s ascendancy, though he himself was the Firstborn. Source: Internet
Rabbeinu Asher died in Toledo on 9 Cheshvan 5089 (1328 CE). Source: Internet
Both Cheshvan and Kislev have 29 days. Source: Internet
Both Cheshvan and Kislev have 30 days. Source: Internet
The month you ask about is consistently referred to in halachic discussions as Marcheshvan, not Cheshvan. Source: Internet