Peter Pettigrew

Early Life (1960-1971)
Peter Wyatt Pettigrew, known more commonly as Wormtail, was born on in Autumn of 1959 in to Elladora Pettigrew and an unknown father.

He is an only child.

While boarding the Hogwarts Express, on September first, 1971, Peter ended up sitting in a compartment with James Potter, Remus Lupin and Sirius Black, who would later become his roommates.

He was then Sorted into Gryffindor House along with James Potter, Remus Lupin, Sirius Black, Lily Evans, Mary MacDonald, Alice Fortescue and Emmeline Vance.

Hogwarts Years (1971-1978)
Peter formed the Marauders with James, Remus and Sirius and spent his first six years at school causing trouble and general mischief, and the Marauders are generally credited as the inspiration behind many of Fred and George Weasley's pranks.

Remus, James, Sirius and Peter also developed The Marauder's Map in early 1976, paving the way for a new generation of mischief makers.

Peter, along with his classmates, graduated from Hogwarts in June of 1978.

First War (1978-1981)
After graduating from school in June of 1978, Peter, along with the other students in his year, joined the Order of the Phoenix, run by Albus Dumbledore. However, Peter also concurrently pledged his loyalty to the Death Eaters, acting as a spy for the Death Eaters within the order.

Peter Pettigrew did not attend James and Lily's wedding, in the summer of 1979, ostensibly because there was a Death Eater Meeting at the same time.

After the Prophecy made in 1980, James and Lily went into hiding, with Peter Pettigrew as their Secret Keeper, as a result of the direct threat Lord Voldemort and the Death Eaters posed to their lives and the life of their child.

Peter betrayed their location to Lord Voldemort in late October of 1981, in order to fulfill the prophecy that Severus Snape revealed to their master.

On Halloween in 1981, as a result of Peter's betrayal, Lord Voldemort attacked the Potters' home in Godric's Hollow, and James, Lily and Harry, all of whom were meant to die that night, survived.

Post War Years (1981-1995)
Peter was eventually caught and imprisoned in early 1982 for the betrayal of James and Lily's location to a known serial killer, as well as the obstruction of justice by running away, and was sent to Azkaban by his former best friends.