Thanks for replying.
It seems "my" branch of the Ewbanke's - those who lived at Borrenthwaite - were most concerned to keep the name going.
When the mother (an only child) of Mary Ann Annas Ravensworth Ewbanke (MAARDE) married on 7/7/1866 her husband had to change his name from Matthew Robinson Wilson to Ewbanke (Times 2/5/1867).
Their only child MAARDE seems to have tried the same thing, but her husband to be, Dr George William Dalston (note spelling) appears to have agreed only to add her name to his. Hence the Dalston-Ewbanke. Their wedding was on 23/9/1890.
By 29/7/1963, the DOD of their son George Michael, in a legal sense the name was gone.
Their daughter, my grandmother, had my father out of wedlock in 1913 - as occurred again in 1916. The solicitor Dawson was the key. When my father found out that the parents who brought him up were not his biological parents he wrote to Dawson who replied telling him "let sleeping dogs lie, you'll never find out." But Dawson wasn't as smart as he obviously thought he was. He can't be blamed for the internet, but he used a relative of his wife to adopt my Dad, so his name was known and I had my trail!!
When on Stainmore last July/August I was told the name of my grandfather - the locals knew!!
Long reply to short question, sorry.