This could be them although Mary is known as Bridget but maybe because her MIL is Mary?
1870
Archbald Blakely Township, Luzerne, Pennsylvania
Commons, Patrick 30 Coal Miner Ireland
Commons, Bridget 30 Ireland
Next Door:
Murphy James 26 Labourer Ireland
Murphy Alice 25 Ireland
Murphy Ann 2 Pennsylvania
Murphy Mary 1 Penn
Murphy Thomas 2month Penn
Commons Mary 65 Ireland.
2 Doors away
Commons, Martin 26 Coal Miner Ireland
Commons Ann 37 Canada
Commons Patrick 6 Penn
Commons Mary J 4 Penn
Commons Michael 3 Penn
Commons William 11 month Penn
Roll M593-1364 Page 102
If it is not the right family, I would think that they might be related.