This author of "Caliban Upon Setebos" and "Soliloquy of the Spanish Cloister" wrote a poem in which the speaker claims, "I warily oped her lids: again laugh'd the blue eyes without a stain" after strangling the title character with "one long yellow string" made from her hair.  
One poem by this author contains the lines, "Thinketh, it came of being ill at ease: He hated that He cannot change his cold, nor cure its ache", and he wrote another poem which begins, "Gr-r-r—there go, my heart's abhorrence!  Water your damned flower-pots, do!"  This author of "Caliban Upon Setebos" and "Soliloquy of the Spanish Cloister" wrote a poem in which the speaker claims, "I warily oped her lids: again laugh'd the blue eyes without a stain" after strangling the title character with "one long yellow string" made from her hair.  For 10 points—name this author of "Porphyria's Lover", who wrote about a woman who "had a heart...too soon made glad" and was painted by Fra Pandolf in his poem "My Last Duchess".
One poem by this author contains the lines, "Thinketh, it came of being ill at ease: He hated that He cannot change his cold, nor cure its ache", and he wrote another poem which begins, "Gr-r-r—there go, my heart's abhorrence!  
Robert Browning