Birth: October-December 1856, Lambeth, Surrey, UK
Father: John Honor Croucher 1810-1901
Mother: Henrietta Ann Darby 1823-1871
Christening: 18 February 1867 Saint John The Evangelist, Lambeth, Surrey, UK
Death: After 1861
Birth of Ada Croucher in FreeBMD in October-December 1856 in Lambeth (1d 317).
Christening of Ada Marian Croucher in the IGI on 18 February 1857 at Saint John The Evangelist, Lambeth, Surrey, parents John Honor and Henrietta Ann Croucher.
In the 1861 census as Ada M Croucher aged 4, and living with her parents (John H and Henrietta A), brother (John A), three sisters (Constance E, Henrietta and Katherine M) and widowed grandmother (Elizabeth) at 4 Vassal? Terrace, Lambeth St Mary, Surrey.
I cannot find any later information except the family had moved to Handsworth, Staffordshire by 1865, her mother died in Brent in 1871 and her father probably emigrated to Australia with her brother John and possibly the rest of the family around this time.