In the comic strip Peanuts, what are the names of Linus' siblings?

Linus van Pelt is a character created by Charles M. Schulz's in the 1959 comic strip Peanuts. Linus has two siblings, an older sister is named Lucy, and a younger brother is named Rerun. Linus was the best friend of the central character, Charlie Brown.

Lucy is older sister of Linus and Rerun, and was characterized as the vein, aggressive, loud mouth bully of the Peanuts characters, often taunting characters like Charlie Brown and Snoopy.

Rerun was an under developed character that later appeared as the new born sibling when Lucy threw her brother Linus out of the house. The irony was that Lucy wanted to be the only child.

Linus' character showed insecurity based on his intense attachment a blanket that he carried around, and by sucking his thumb. However, Linus was the thinker of the Peanuts characters. He acted as the voice of reason to the characters, mostly Charlie Brown, by being the strip's philosopher, thinker and theologian. Linus' belief however was in The Great Pumpkin who, according to Linus, appears every Halloween rising from the most "sincere" pumpkin patch, bearing gifts to children.