b88774c0_cation___SharePoint_Automation__Description
[Parameter Name] ownerlogin [Short Form] ol [Required] Yes - unless -donotcreatesite is passed in [Example Usage] -ownerlogin domain\user1 -ol domain\user1 [Description] 
The login name of the owner of the site if a root site collection is to be created. This parameter is disabled if -donotcreatesite is passed in.
Create Web Application « SharePoint Automation
Description