Sorry, I should have been clearer - Winning was William’s middle name. He was William Winning Davren.
I have just had a look at the death of one year old Arthur in 1935 and it confirms he was the son of John Davren, Motor Lorry Driver, and Sarah Cunningham Harkness Davren nee Winning. He died at Robroyston Hospital, but usual address was 192 Dalmarnock Road. He died of Bronco-Pneumonia and Enteritis. So not a still birth as you previously thought.
I wondered why I couldn’t find William’s death.
So it looks as if we have-
John born 1936
Son of John born 1907 and Sarah Winning
Grandson of Arthur born 1888 and Helen Hosie
Great grandson of John born 1865 (Perth) and Margaret Carruthers
Great/great grandson of Arthur Davren and Agnes Shilland