In the genes? Seventh grader says bloodlines of 42 of 43 U.S. Presidents link back to King John of England

Californian's genealogy project links majority of commander-in-chiefs to Magna Carta signer. Finds out she’s related to President Obama to boot.

By Christine Roberts

A spot in the Oval Office may be in the genes.

A young California girl made the ultimate presidential family tree and found that all of the U.S. commander-in-chiefs except for one share an ancestor - King John of England.

BridgeAnne d'Avignon traced the 43 presidents' male and female family lines and discovered that 42 are linked to King John Lackland, known for signing the Magna Carta in 1215, KCOY reported.

"They all have the trait of wanting power," the 12-year-old told the local television station.

D'Avignon, a seventh grader at Monte Vista Christian School in Santa Cruz, Calif., first began the massive project with the aim of tracing her own ancestry.

At some point during her research, she decided to expand her scope, spending several months looking at over 500,000 names in search of the presidential bloodline began.

"I think we just all go back somewhere. It's just a matter of proving it," she said.

Before d'Avignon, historians were only able to link the bloodlines of 22 presidents, according to KCOY.

The one president who is reportedly not related to John Lackland is Martin Van Buren, the eighth U.S. president.

The budding genealogist also discovered that she can count President Obama as a relative, an 18th cousin, in fact.

D'Avignon has penned a letter to the president with the hope of making a trip to the White House to explain her geneological project to Obama. She's also begun to raise money for the trip.

But the middle-school student says she's only received a standardized response from the White House so far.