Knowing her spouse was dead , she went into mourning , ignoring Henry IV 's demands .
King Henry IV initially refused , deciding Queen Isabella should marry his son , the future Henry V of England , but she refused .
Knowing Queen Isabella 's spouse was dead , Queen Isabella went into mourning , Henry IV   IV 's demands .
King Henry IV initially refused , deciding Queen Isabella should marry his son , the future Henry V of England , but she refused .