As long as there's no word boundry touched, it won't remove the "I" in the author name; however, it will remove the personal pronoun "I". I'd do something like this: 
#!/usr/bin/perl -l

use strict;
use warnings;

my(@data) = q(
    1. Iilliam H. Schneider, IV
    2. William Vassilakis, II
    3. Alessandro Calvi, I
);

foreach my $data (@data) {
    $data =~ s/\b[IVXLCDM]+\b//g;
    chomp $data;
    print "$data\n";
}

[download]
I used "Iilliam" instead of "William" for demonstration purposes.

In reply to Re^3: How to remove roman numbers by Khen1950fx
in thread How to remove roman numbers by Priti24

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