In the 1930 US Census for District 512, Philadelphia (Districts 501-750), Philadelphia, Pennsylvania the family of the widow Agnes Barnum was enumerated as follows:
Dwelling #367; Family #437 (6008 Spruce Street)
Barnum, Agnes; Head; Owns non-farm home valued at $8,000; Owns radio set; F; W; 54; Widowed; Able to read and write; b. North Ireland; Both parents b. North Ireland; Date of immigration not known; Able to speak English; No occupation
Barnum, Grace; Daughter; F; W; 21; Single; Able to read and write; b. Pennsylvania; Both parents b. North Ireland [sic]; Able to speak English; No occupation
Pollock, Agnes; Lodger; F; W; 19; Married; 1st married at 18; Able to read and write; b. Pennsylvania; Both parents b. Pennsylvania; Able to speak English; Hairdresser; Beauty parlor; Wage earner
Family lore suggests that Agnes' father was an English Protestant who converted to Roman Catholicism, although relatives have traced him to Ireland. Her wedding band is still held by a family member. There also exists a photograph of Agnes and John J. Barnum, with a very unpleasant-looking lady standing nearby. That lady was supposedly Agnes' "sponsor", she having been an indentured servant until her marriage to John.
The name Roscommon is derived from Saint Coman, who built a monastery there in the fifth century. The woods near the monastery became known as Saint Coman's Wood, or Ros Comáin in Irish. This was later anglicised to Roscommon. This attractive and busy market town contains a Dominican Friary, founded in 1253 by Felim O'Connor, King of Connacht, and Roscommon Castle, built in 1269, an Anglo-Norman fortress.
She had become a US citizen by the time of the 1910 Census.