Hello Tjtree,
When Ann Marshal Stevenson, died 1878, her children were split up between different factions of the family which other posters have supplied the information.
Well here is your David Stevenson, living with his uncle in 1881.
Address 88 1/2 Louden Street, Glasgow.
John Marshall, Head Shoe Maker, M. aged 40 years M. born Ireland,
Elizabeth Marshall, Wife, Seamstress, M. aged 40 years, F. born Ireland,
Patrick Marshall, Son, aged 15 years, M. born Ireland,
David Stevenson, Nephew, aged 15 years, M. born Glasgow, Lanark.
The above address is very close to Bridgegate,
The above John Marshall, is the son who registered his father William Marshall's, death.
John Marshall, and his wife Elizabeth, also had a Daughter Sarah Marshall.
Regards
Jonn.,