Based on the clue 'by her own claim the poems of susan polis schutz h...', what is the answer?

Based on the clue 'by gosh this singer seen here is famous for her by...', what is the answer? Based on the clue 'by gum its a fishing spear with a 3 pronged point', what is the answer? Based on the clue 'by gum the mansion built by this chewing gum mogul...', what is the answer? Based on the clue 'by her last name this 20th century british prime m...', what is the answer? What is associated with: by him in 1899 the oedipus complex? Based on the clue 'by his account he reached the new worlds mainland ...', what is the answer? What is associated with: by his death at age 31 in 1828 hed composed more than 600 lieder including ave maria? Based on the clue 'by his nickname the late andre roussimoff', what is the answer?