Hello Champas,
I don't know if you have Maria's other children, see below. I'm descendant from Maria's youngest daughter Ida.
Maria lead an interesting life, I was able to trace a quite a bit through Trove, the file is to large to post here if you are interested pm me your details and I will forward it onto you.
Robert.
Maria Elizabeth Cuthbertson
1852 - 1936
Parents:
Father, James CUTHBERTSON, born about 1830 Darlington, Durham,Yorkshire, England.
Parents Thomas & Elizabeth Cuthbertson, (source 1841 census).
Mother, Maria THOMSON, born, about 1824, England
Marriage of parents; 23 Feb 1852,
Marriage Register, St Bartholomew, Moor Lane, City of London.
James CUTHBERTSON, full age, bachelor, Shoemaker, 1 Maidenhead Ct, father Thomas Cuthbertson, Nail maker to;
Maria THOMSON, full age, spinster, Brace stitcher, 30 New Union St, father Alexander Thomson, Shoemaker.
Married after banns.
Both signed in presence of Alex Thomson, Elizabeth Spiller.
Birth: Maria Elizabeth Cuthbertson; Born, 11 Sep1852, East, London, England.
Baptised 1 Mar1853: Maria Elizabeth, d/o James & Maria CUTHBERTSON, 3 Finsbury St, Shoemaker, at the District Parish of St Bartholomew, Little Moorfields, London, England.
Death: Maria Elizabeth (Pain, Paine) Cuthbertson, died on 8 Aug 1936. at Wellington, NZ. Buried in the Karori Cemetery.
Children born to Maria Elizabeth Cuthbertson and father Edward Stacey?

??
Alfred William Cuthbertson, born; 3 Jul 1870 at Campbell Town. died; 4 Mar 1940, Hobart.
Birth Reg; Mother, Maria Elizabeth Cuthbertson, father no entry.
(Maria stated in Court that Edward Stacey, was the father.)
Children born to Maria Elizabeth Cuthbertson and father


Flora (Cuthbertson) Pain, born; 23 Jul 1876 at Campbell Town.
died; 28 Jan 1955, Lower Hutt, NZ.
Birth Reg; Mother, Maria Elizabeth Cuthbertson, father no entry.
Marriage 5 Jun 1877: William Pain, widower, aged 72 yrs, married Maria Elizabeth Cuthbertson, aged 25 Yrs. on the 5 June 1877.
William Pain, Convict, 1829 "York" (1)
1805 - 1884
Born 2 Jan 1805: William Pain (recorded as Payne). Born; 2 Jan 1805, St Thomas near Exeter.
Baptised 20 Jan 1805: William Pain, at Exminster.
Death 12 Jun 1884: William Pain, at Campbell Town aged 80.
Children to William Pain and Maria Elizabeth Cuthbertson, at Campbell Town, Tas.
William James born; 25 Apr1880 died. 25 Apr 1880.
Clara Mary born; 27 May1881 died; 23 Jan 1973
Ida Edith born; 28 Jun1884 died; 13 Feb 1961