Yes, I agree with this. In fact, anyone searching for their McGaffin / McGuffin ancestors might want to leave the surname even more open than that. Stepping back from individual persons and looking at the bigger picture, I've examined the Irish McGaffins in the late 1800s and found a large concentration in Tullylish Parish, County Down, with a few satellites in the likes of Newry. Go back to 1860'ish (per Griffiths Valuation) and there are virtually no McGaffin households. Likewise, increasing numbers of McGaffins in the 1871/81/91 and 1901 Scottish censuses, but virtually no McGaffin households prior to 1850. Same goes for BMD records, virtually nothing prior to 1840/50. What's going on? The only clue I can offer is that the Tullylish McGaffins (my ancestors) were aka Gaffikins. I've also seen the name spelled 'McGaffan' and read stories about the name coming from 'McAfee' and connected to the Ayr area and the island of Colonsay. I can only assume that this line has rapidly 'morphed' into all sorts of surname variations over the years. I'm open to other suggestions.