Lend your name to something
Definition 1 of 1
Pro Tip 1/3Approval Implication
Lending your name suggests you approve of something without direct involvement. 
She lent her name to the initiative, signaling her support from afar.
Pro Tip 2/3Implicit Trust
Allowing use of your name implies you trust the cause or organization. 
By lending his name to the event, he showed implicit trust in its organizers.
Pro Tip 3/3Reputation Use
Using your name lends credibility and can draw attention to the matter. 
She lent her name to the book, instantly boosting its profile.