Lose the blinkers. You need to keep trimming away your own presumptions, because otherwise they’ll just grow back. No, not all Cholmondeleys were Protestant. Yes, some nineteenth-century families moved back to Ireland from the US. No, we’re not all descended from Milesius.

Burrow. If you can’t find what should be there, don’t give up. Look at records for adjoining areas, look at earlier and later records, try different spellings, different forenames, different families in the same area. . . You are a dog and this is your bone.

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