Which preposition to use with welcom

as Occurrences 1%

Welcom as Peace t'unwalled Cities, when Famine and Sword leave them more graves than men.

Of Occurrences 1%

Is this the welcom Of such a Towne, so bound in preservation To us and ours? 2 Cap.

to Occurrences 1%

Gentlemen, you are welcom to Elsonower: your hands, come: The appurtenance of

Which preposition to use with  welcom