One word links the 3 clues in each question. The last question links all 9 answers.
1. A species of waterfowl / a character found in fairy tales and nursery rhymes / a marching step associated with Germans in WW1
 Goose: Mother Goose / Goose step
2. English boy band, hits include One Love and All Rise / Popular nickname of Frank Sinatra / American rock band best known for the singles "Don't Fear The Reaper" and"Burnin' for You"
 Blue : Boy band - Blue / Ol Blue eyes / Blue Oyster Cult
3. Emily Blunt in a 2018 remake of a 1964 movie classic / Rebecca De Mornay in The Hand That Rocks the Cradle in 1992 / British drama series starring Wendy Craig 1981-83
 Nanny: Remake of Mary Poppins / Rebecca De Mornay played a nanny / TV series called Nanny
4. A species of bird / Trade Union leader, known for supporting rail workers / American singer, had a hit with "Steve McQueen"
 Crow: Union leader Bob Crow (died 2014) / singer Sheryl Crow
5. Played by Ursula Andress in 1962 Bond movie / Bobby Goldsboro song 1968 / A sweet edible food
 Honey: Bond girl - Honey Rider
6. Irish singer, twice winner of Eurovision Song Contest / alias of X men character Wolverine / 1976 science fiction film starring Michael York & Jenny Agutter
 Logan: Irish singer Johnny Logan /alias Logan / movie, Logan's Run
7. The dry stalks of cereal plants after the grain and chaff have been removed / a small tube / a pale yellow colour
8. British Prime Minister 1766-1768 / American Indian held in high regard within his tribe / Tree variety where the flowers can be used to make cordial or gin
 Elder: William Pitt the Elder
9. The murder victim in Cluedo / nickname of the son of Edward III and father of Richard II (1330–1376) / Character in Monty Python & the Holy Grail who guards a bridge over a small stream
 Black: Dr Black / Edward, the Black Prince / Monty Python - the Black Knight.... "it's just a scratch!"
10. What is the connection between the 9 answers
 BERRIES: Gooseberry, Blueberry, Nannyberry (species of viburnum), Crowberry (species of heather family), Honeyberry (honeysuckle fruit), Loganberry, Strawberry, Elderberry & Blackberry.