Michael Diamant questioned:

My question is, What is a ritual wife and does that title infer
illegitimacy on her children?

The union of the mother and father as well as the birth of their
children took place in Lvov, c1910. Would I be able to obtain a
marriage certificate >from Lvov archives?

Ritual Wife indicates that there was no civil union between the
child's parents. They were married by the rabbi, but this marriage is
not recognized by the government. Therefore, all children born prior
to a Civil marriage are illegitimate.

There is no marriage certificate, a civil document, to be obtained.

There are lengthy discussions on this topic in the discussion group archive.

Barbara Ellman
Secaucus, NJ