No, they are not related in any way.
Yes
A sister, Cindy
yes 4bros and 7 sis
Yes, two sisters
yes he has two brothers named johnny and steve.
Yes! I don't know anything about them, but I know that because that is how I am related to Sir Isaac Newton.
Yes, he had one biological sister and one adopted sister.
Yes, four brothers: Dan, Matt, Sean and Steve.
Yes, Sir Alfred Noyes had one sibling, a younger brother named Arthur.
Steven redgrave had children called nallite shaphire and one called jack
Timothy Dalton and Vanessa Redgrave never had any children. But, he does have a son with Oksana Grigorieva.