Get the author of current entry version?
You have to write a template variable that makes getVersionsByEntryId() available in Twig.

public function getVersionsByEntryId($entryId, $localeId, $limit = 1, $includeCurrent = true)
{
    return craft()-&gt;entryRevisions-&gt;getVersionsByEntryId($entryId, $localeId, $limit, $includeCurrent);
}


You can now access an entry’s versions and get the current version’s creator like so.

{% set versions = craft.businessLogic.getVersionsByEntryId(entry.id, entry.locale) %}
{% set author = versions|length ? versions[0].creator : entry.author %}

{{ author.fullName }}