You just got to brainstorm. Have people do lots of brainstorming, write it down. Then see what the results help you create. Synergy works wonders. Develop focus groups to help with your development of a name. Changing a business name is a hassle and can be expensive. These may give you an idea.
Heritage Wealth Management
American Wealth Management
Whimsical Wealth Management
Security Wealth Management
Security and Investment Management
American Investment Management
Estates Wealth Management
Town and Country Wealth Management
AAA Wealth Management (that puts you first in the list in the phonebook)
Sound Investments Wealth Management
Solid Foundation Wealth Management
Wealth Management Diversified Securities (acronym would be WMDs, that's almost a household word)
Kern River Wealth Management
Kern County Wealth Management
Trump Wealth Management
Helmsley Wealth Management
Enron Wealth Management