It would help to narrow things down if you gave more information:
- full given name (What do the initials "A" & "L" stand for?)
- birth date, if known
- the full name of the sister (given and married name if known)
- his wife's full name including maiden name, if he married
- exactly where this gentleman emigrated from: e.g. Dundee, Angus, Scotland
- where in Welland County did the sister live
- their parents' names
- his occupation
If I were you, I'd start all over and post a new query giving what info you want and what you already know.
It would be best also to compose a new subject line, for example:
Andrew Lloyd Rose & sister Janet Rose Smith, born Scotland, lived in Niagara Falls: looking for descendants
Good luck,
Sharon
Welland, Ontario