Is this David with his parents -

1891 census 249 Junction Street, Leith South -
Parish Leith South ED 28 Page 23 Line 2
David Henderson aged 34 - Railway porter - born Kincardineshire
Jane R aged 36 years - born Ayrshire
Robert aged 13 years born Ayrshire
Mary aged 12 Midlothian
Isabella aged 10 born Midlothian
Ann aged 9 born Midlothian.
David 6 born MidlothianJoseph aged 4 born Midlothian.
James aged 2 born Midlothian
Mary aged 2 months. born Midlothian.
Sandra