Patrick Gallagher is Frank's cousin, a minor character in the series, who makes two brief appearances in Season 3 and Season 6.
In Where There's a Will, he meets the rest of his extended family and fights with Fiona over the Gallagher House. Patrick tricks Fiona and gains ownership of the house, thereby becoming her landlord. However, he is unable to kick them out, as they blackmail him with false accusations of him making advances on Debbie.
He reappears in Going Once, Going Twice, where it is revealed Patrick ultimately took out a 60,000 loan on the house which he never intends to pay back, which in turn causes the Gallaghers to be evicted.
- It is unknown if he is the nephew of Frank's father or Peggy Gallagher from an unknown sibling or a distant relation.
- He was known as Pit Bull in his youth, Frank states this was because he never gives up once he settles on something and previously an odor problem.
- He appears familiar with the Milkovich Family, as he identified who they were in the attack.
- He seems to be doing well for himself, despite being a Gallagher.