I am always interested in families from Castlecomer as that is where my father's family came from. They too came to Philadelphia, where I still live. Many people from Castlecomer came here to Pa and they were coal miners, and Schuylkill County was where the coal mining jobs were.
I did find your family in the 1860 census living in Frailey Schuylkill County Pa. (Donaldson PO is referenced)
The family members listed are Alex McDonald 32, Julia McDonald 32, Mary McDonald 8, Cath McDonald 4, Ellen McDonald 2
My relative from Castlecomer is James J Ryan 1848-1929 came to US in about 1867 and was first a laborer and then a railroad contractor in Phila. He likely knew some of your relatives as he always kept up with relatives and friends from Castlecomer.
Marge Gillis