If you're like I am, you may feel that when you read someone's research -- be it on the internet or typewritten (in book form or otherwise) -- and you see spelling errors, you suddenly fear that if someone can't SPELL correctly, what faith can you possibly have that they can RESEARCH any better? I've heard all the arguments; but consistency verifies ignorance, not accidents. And just so you know I'm not going off half-cocked, I use this little lesson when I teach people how to compose genealogies. So, for your assistance, apostrophes are not used to pluralize names.
TO MAKE A NAME PLURAL
Names that end in vowels generally merely require the addition of an s: one Ada, two Adas; one Steve, two Steves; one Petri, two Petris, and so forth.
Names that end in consonants other than S, X or Z merely require the addition of an s: one Anderson, two Andersons; one Enyart, two Enyarts; one Casey, two Caseys; one Bellall, two Bellalls, and so forth.
Names that end in S, X or Z require the addition of an E-S on the end: one James, two Jameses (I better know this, it's my name!); one Phillips, two Phillipses; one Metz, two Metzes; one Cox, two Coxes, and so forth.
Names pluralize just like other words: one test, two tests; one bus, two buses; one key, two keys; one chain, two chains; one photo, two photos; one ditz, two ditzes; one box, two boxes.
Of course, there are always exceptions with every grammatical rule, but the exceptions are few in number. To one rule, however, there is NO exception: Apostrophes are used for possessivizing, not pluralizing. By understanding and applying this simple rule, if nothing else, you can save yourself typing time by reducing the number of keystrokes in your documents.
Again, no offense intended; this is for INFORMATION. I hope people find it useful.Cheers!