Agreed
On the 1881 Census, the Winifred with Maurice and Elizabeth Jones is aged "7 mths?". The 1881 Census was taken Apr 3rd 1881 - which puts the date of birth around Sep/Oct 1880.
There's a birth registration for a Winifred Jones, Sep Qtr 1880, reg. dist. Corwen, 11b 392 - mother's maiden name Roberts.
There's a marriage registration for a Maurice Jones, Jun Qtr 1880, reg.dist. Corwen, 11b 557 - on the same page is an Elizabeth Roberts.