I am a law school graduate. What I offer is mere information, not to be construed as forming an attorney client relationship.
No -- misappropriation of personality.
To get permission, ask. IF yes, get an agreement in place (license or something). If no (i.e. dont know child/mom), then go ahead. Likelihood of getting caught very minimal. When you do get caught, pay them percentage, citing couldn't find them. I don't advocate this, but it is done very commonly.