Sorry to butt in, grammatj8 .... but look back at the whole query, read it over and just see what Tati has answered... She's gone out of her way to answer all ( including the first question, which is what happened after 1881, ahem...altho you had the 1891?)
Anyway, she has seen a four year old on the 1901 and found a marriage for Mary, who is missing...from four years earlier, which sounds feasible, although it may make the child conceived out of wedlock...(like umpteen thousands of other children )...Plus, there is nothing to say that Mary's middle name isn't Ann. just because it wasn't used on the census...
You'll see what I mean when you reread...we've all done it... Read too quickly and brain not absorbing... I'm the queen of that...
Oh no, I'm very appreciative of all the help I am getting. If I said otherwise I apologize. I shall reread and absorb, and start filling in the blanks as well as recoping so that I don't lose anything Thanks again.