Which heaven to gaudy day denies" and is compared to "the night /
One work by this author notes that "the sword outwears its sheath / And the soul wears out the breast" before stating that "the night was made for loving / And the day returns too soon". The central figure of another of his poems exhibits "that tender light / Which heaven to gaudy day denies" and is compared to "the night / Of cloudless climes and starry skies". This author also wrote a long poem about a Spaniard who escapes from a seraglio and fights in the siege of Ismail while repeatedly being seduced. For 10 points, identify this author of "So we'll go no more a-roving", "She walks in Beauty", and Don Juan, who created a namesake hero in his "Childe Harold's Pilgrimage".
One work by this author notes that "the sword outwears its sheath /
{George Gordon}, {Lord Byron} [accept either underlined portion]