There were several third party websites, educational establishments, libraries, who were granted abilities to allow people to create an avatar via their website, and they had a selection of surnames on offer. They still exist, but now, because of word getting out via a JIRA, one by one the websites now insist you can verify you are a member of an educational establishment or their library, etc., before you can enrol via them.
The JIRA makes for interesting reading:
https://jira.secondlife.com/browse/SVC-7125
Please add your comments to the JIRA. It might help change things back to how they were. Last Names rule :matte-motes-big-grin-wink: