As a starting point here's a very promising marriage for Margaret Cusack to an Andrew Doyle in 1902 in Cork City. The bride's residence is given as Mitchelstown and her father as Michael Cusack a Merchant.
Civil birth records, which cover up to about 1916, include births of a number of children to the couple - Eileen 27th June 1903, Elizabeth 28th February 1905, Agnes 26th September 1906, Matthew 28th September 1907, Patrick 30th Sepetember 1910 and Andrew 1st December 1915. The place of birth and residence for these is Auburn Terrace, Wexford town, and their father Andrew is listed as an Agricultural Engineer
The 1911 census lists the family on Redmond Street in the town - possibly Auburn Terrace was the name of a section of houses on this street.
Edited : I had a look at the reverse of the census form and see that 'Redmond Street' is a transcription error, it's actually Redmond Road, which is still there. The c1900 OSI map shows Auburn Terrace where your Doyle/Cusack family lived.