Superstar Britney Spears‘ erratic behavior has been generating headlines for nearly a year, but she’s one of the most stable individuals in her family!

Britney has a dark family secret — two of her uncles are ex-cons with long rap sheets for crimes in three states, The ENQUIRER has learned exclusively from court records.

While Britney has amassed a fortune living the glamorous life, one of her uncles is known as “Road Kill Willie” because sources say he likes to scoop up critters that have been hit by cars and cook them for dinner!

Road Kill Willie has been busted for burglary, drug distribution and being a deadbeat dad, according to court records. He is the brother of Britney’s father Jamie.

Britney’s other uncle, June Spears, has been charged with assault with a deadly weapon, driving under the influence and beating his wife, say court records.

Sources close to the family tell The ENQUIRER that Britney avoids her uncles whenever she goes home to Kentwood, La. (And she never dines with Road Kill Willie!)

“I think Britney’s uncles are a couple of the biggest outlaws in Kentwood!” an insider told The ENQUIRER. “Britney must think they are bums.”

Willie spends most of the time living in tents and camper trailers or sleeping in cars.

“Until recently, Willie was living in an 18-foot trailer on a riverbank outside of Kentwood,” said the insider. “But Willie got hard up for cash and ended up selling his trailer for $60.

“These days he sleeps in his van or stays with friends. “June lives about the same way as Willie, squatting anywhere he can.”

Britney’s dad sometimes gives Road Kill Willie, 46, and June, 41, work with his construction company, said a source. But the source said the pair fight so much, one of them usually has to go.

Mostly the brothers just pick up odd jobs — and try to stay out of jail — unsuccessfully.

According to legal papers obtained by The ENQUIRER, Road Kill Willie was charged in Mississippi with two criminal felony counts of burglary in January 1982. He pleaded guilty and got five years probation, 60-hours of community service and a $150 fine.

In January 1992, court records state Road Kill Willie was busted for distribution of marijuana. He pleaded guilty and was placed on probation for three years and fined $500.

The following year, he was cited for trespassing while fishing on private property. (Fishing? Hey, that’s a step in the right direction!) He was given probation, fined, and ordered to pay court costs, according to legal papers.

And earlier this year, deadbeat dad Willie was slapped with contempt of court in Louisiana after he fell behind on his $153-amonth child support payments to his ex-wife Louise, according to a court order.

June’s criminal record is even more shocking.

In September 1991, June’s then-wife Jodi filed for a restraining order against him after he allegedly kicked her in the head and chest, hit her with a cast he was wearing on his arm, and threatened to kill her.

In 1993, June was charged with committing battery against Jodi, as well as two counts of disturbing the peace. The case was later dismissed.

In 1998, police in Memphis, Tenn., arrested Britney’s uncle for driving under the influence of alcohol or drugs, public intoxication, and reckless driving, say court records. After pleading guilty to DUI, the other charges were dropped.

On Dec. 6, 1999, he was hit with a felony charge of aggravated assault after allegedly pulling a .22 caliber rifle on a man during an argument. He pleaded guilty and received a lesser charge of misdemeanor assault. He was sentenced to 90 days in a workhouse and given a $500 fine.

Incredibly, despite their long rap sheets, a source says that the pair think it’s wrong for Britney to act like they don’t exist.

“Both of Britney’s uncles are proud of her accomplishments, but they’re also disappointed that she barely acknowledges them,” the insider revealed.

“Willie and June never asked Britney to help them with anything. They just wish she’d remember where she came from and treat them like family again.”