Cannot drop login from SQL 2012

Question

I am trying to drop a login with no mapped dbs, no owned schemas, no rights, no endpoints, nothing what-so-ever and I have been at this for 4 hours.  This is the error, is there any global way to determine what in the world SQL 2012 sees this login
as owning?????
Msg 15141, Level 16, State 1, Line 1
The server principal owns one or more server role(s) and cannot be dropped.

Answer 1

****************To check User Own Schema
select * from sys.schemas where principal_id = user_id('user_name')
select * from sys.database_principals where owning_principal_id in (
select principal_id from sys.database_principals where name='DomainName\UserName')
ALTER AUTHORIZATION ON SCHEMA::SchemaName TO dbo
*************** To Transfer any object owned by user/principal
SELECT 'ALTER SCHEMA [dbo] TRANSFER [' + SCHEMA_NAME([schema_id]) + '].[' + [name] + '];'
FROM sys.objects
WHERE [schema_id] IN (SELECT [schema_id] FROM sys.schemas WHERE principal_id = USER_ID('DomainName\UserName'))
************** To Check Role Owner
select dp2.name as role, dp1.name as owner
from sys.database_principals as dp1 inner join sys.database_principals as dp2
on dp1.principal_id = dp2.owning_principal_id
where dp1.name = 'Username'
************** To Change Role Owner
ALTER AUTHORIZATION ON ROLE::[RoleName] TO [dbo];