Complex sentence: Locke retreated into a life of solitude, until he was visited one day by a younger man, Peter Talbot, asking for information about "Adam Seward," who intended to marry the man's wealthy mother.
Split into simpler sentences: Locke retreated into a life of solitude until he was visited one day by a young man named Peter Talbot. Pete came asking for information about "Adam Seward," who intended to marry the man's wealthy mother.