The soundex code for O'Neil is O540.
Below are other surnames with the same soundex code. Click on a surname to see the listing for that name, or click the checkbox next to one or more names and then click the merge button to produce one listing including all the checked names.
Omalley Onill

Users that have searched for O'Neil have included the following names in their searches. Numbers indicate number of searches.
Onill (827) O'Neil (16) duncan (4) henry (4)

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