Can you expand the information you are giving please -
* "Nancy was then adopted by another family."
What information do you have about the family that raised Nancy?. These arrangements often involve extended family.
* Can you list everything on the birth certificate, 1910.
There should be a place of birth, name of informant, date and place of registration.
On the 1911 census Nancy was a nurse child living with a Fred Staveley and Florence E Staveley. On the 1921 census Nancy is living with a James Edward Starbrook and Mary Sophia Starbrook and is referred to as adopted child father dead. I know adoptions weren't legal then I have had this before, but they have listed her as that. I think the Starbrooks were actually Stainbrook. On the 1939 register Nancy is now married to Bernard Sidney Hutchinson and Mary S Stainbrook a widow is living with them.
Nancy May Macmillan was born on the 23rd May 1910 at 1 Bernard Terrace Nottingham. Her mother was Sara Macmillan housekeeper (domestic servant). Sara lived at 1 Arthur Street Nottingham. The birth was registered on the 20th June 1910.