Ron,
You haven’t given me much to go on there. No year of birth or parents names. Looking at the 1901 census for Ireland there were 78 women named Margaret Savage, 38 of whom were born in Co. Down. So to be certain that I have the right one, I need her parents names (from say a marriage or death certificate) and her approximate year of birth.
Did Denis & Margaret marry in the US, because I don’t see a marriage for them in Ireland? Did they meet in the USA or did they know each other in Ireland?
I do see a Maggie Savage living beside the Hill family in Moneyscalp, but as I say without more information I have no way of knowing for certain whether that’s the same girl Denis married.
http://www.census.nationalarchives.ie/pages/1901/Down/Bryansford/Moneyscalp/1233523/
Her parents were Francis Savage & Teresa Quinn. She had left Moneyscalp by 1911:
http://www.census.nationalarchives.ie/pages/1911/Down/Bryansford/Moneyscalp/242764/
She was born 3rd April 1887 at Moneyscalp. According to the 1911 census, she was one of 14 children, 10 of whom were alive in 1911.
https://civilrecords.irishgenealogy.ie/churchrecords/images/birth_returns/births_1887/02564/1948227.pdf
Probate abstracts from the PRONI wills site. This first one clearly relates to the family I have identified:
Probate of the Will of Francis Savage late of Moneyscalp County Down Farmer who died 20 August 1913 granted at Belfast to Hugh McCartan and William Murnin Farmers
These others also lived nearby but you would need to do a bit fo research on them to find out if and how they are conncted:
The Will of John Savage late of Moneyscalp County Down Farmer deceased who died 29 April 1882 at same place was proved at Belfast by William M'Anulty of Burren and Edward M'Cartan of Moneyscalp both in said County Farmers the Executors.
The above will is on-line on the PRONI wills site.
Administration (with the Will) of the personal estate of Michael Savage late of Moneyscalp County Down Farmer who died 20 January 1900 granted at Belfast to Patrick Savage Farmer.
The above will is on-line.
Administration of the Estate of Patrick Savage late of Moneyscalp County Down Farmer who died 1 May 1904 granted at Belfast to John Savage Farmer.
Administration of the Estate of Henry Savage late of Moneyscalp County Down Farmer who died 5 March 1911 granted at Belfast to Margaret Savage the Widow.
Probate of the Will of Margaret Savage late of Moneyscalp County Down Widow who died 16 October 1913 granted at Belfast to Susan Mullan Spinster
Savage John of Moneyscalp county Down labourer died 15 March 1933 at Mourne District Hospital Kilkeel Probate Belfast 24 April to John Savage and John McCusker farmers. Effects £187 12s. 6d.
Two of the wills are on-line. For the rest you would either need to pay PRONI to copy them, or get someone to go to PRONI to do that for you.