That Francis Lee married Jessie Lawrie in 1896 so not the correct one.
Just so that no one tries following this, it is a dead end:-
1891 there is only one Margaret, born Scotland, aged 21 living in Hull. She is Margaret Taylor a visitor living with Howell E Lewis, 30 (Congregational Minister) and Mari E Lewis, 23, born Scotland.
I found this couple's marriage, she was Mary Taylor (so I suspected sister of Margaret Taylor). Found the couple in 1901 and 1911, Mary was born on Islay. 1871 census of Scotland I found Mary and Margaret Taylor with their parents on Islay.
So I have identified the only Margaret, born Scotland 1870, living in Hull in 1891, but I still don't have any proof it is the Margaret who married Francis Lee!
Elaine