a sixteen line poem is a sixteen line poem, not a sonnet, consisting of fourteen lines.

Milton's sonnet on his blindness. which is what you are close to quoting, is a sonnet in the Italian style with rhyme scheme abba abba cde cde.

"On His Blindness" by John Milton is a Petrarchan sonnet, which is a 14-line poem with a specific rhyme scheme (ABBA ABBA CDCDCD) and usually explores themes of love or unattainable desire. Milton wrote this poem to reflect his inner thoughts and struggles upon realizing his loss of sight.

No, the poem "Travel" by Robert Louis Stevenson is not an English sonnet. An English sonnet typically has 14 lines with a rhyme scheme of ABABCDCDEFEFGG, whereas "Travel" has 16 lines with a different rhyme scheme.

it's a miltonic sonnet.

Milton puts volta in middle of eighth line.