Senate Majority Leader Mitch McConnell, who recently voiced opposition to reparations for the descendants of slaves, has slave owners in his Alabama family line — with two ancestors owning at least 14, according to a report.

Two of his great-great-grandfathers — James McConnell and Richard Daley — owned 12 female and two male slaves, NBC News reported, citing the Limestone County “Slave Schedules” in the 1850 and 1860 censuses.

McConnell has said he opposes compensating the descendants of slaves.

“I don’t think reparations for something that happened 150 years ago, when none of us currently living are responsible, is a good idea,” the Kentucky Republican told a House committee in June.

“We’ve tried to deal with our original sin of slavery by fighting a civil war, by passing landmark civil rights legislation. We’ve elected an African American president,” he added.

McConnell’s office did not respond to multiple efforts by NBC News to inquire whether he was aware that his great-great-grandfathers were slave owners.

NBC News reported that it found no news articles or records in which McConnell mentioned a slave connection in his family’s past — including his 2016 memoir, “The Long Game.”

In the book, he wrote that he came from “a long line of hardworking and often colorful McConnells,” but did not mention that any of them owned slaves.

He did cite another James McConnell — apparently the father of the slave-owning James McConnell — who he said came from Ireland in the 1760s and fought in the American Revolution.

Mitch McConnell’s memoir refers to slavery twice, including a chapter about Barack Obama that calls it the country’s “original sin,” saying it was a “proud moment” when Obama was elected, according to the Washington Post.

Citing the 1850 census, NBC News reported that Daley owned five female slaves, ranging in age from 2 to 22. Four of them were classified as “mulatto” — a now-offensive term for people of mixed race.

In the 1860 census, he was reported to own five slaves, three females and two males.

Two of the females, ages 30 and 11, were classified as mulatto, while the third, age 39, was listed as black. Both males — one who was either 10 or 12 and one who was 7 — were listed as mulatto.

James McConnell was listed as having owned four female mulatto slaves in the 1860 census, ages 1, 3, 4 and 25.

The records indicate most of the two men’s slaves managed to flee, with the 1860 census showing that all of James McConnell’s slaves had escaped, as had all but one of Daley’s.

According to the 1850 census, four of Daley’s five slaves had fled, suggesting he acquired more over the 10-year period.

None of the slaves were identified by name in the records.

Chuck Collins, a senior scholar at the Institute for Policy Studies, a liberal think tank in DC, told NBC News that despite the abolition of slavery, McConnell’s ancestors demonstrate that its economic benefits extended to future generations.

“Smaller farms and plantations still benefited enormously from the unpaid labor of enslaved people, which likely helped them build multigenerational wealth,” Collins told the network.

Louis Cain, a professor emeritus at Loyola University Chicago and an expert on the economics of slavery, told NBC News that more Americans have been tarnished by slavery than they realize.

“I suspect with the mobility of the American population in the 20th and 21st centuries, most of us have ancestors that owned slaves, including many individuals who did not arrive until well after the Civil War,” Cain said.

“The responsibility for what happened was collective, not individual.”

McConnell has generally been supportive of civil rights measures and said his parents opposed the widespread segregation that surrounded his family in Alabama.

But like most Republicans, he supported the narrowing of the Voting Rights Act by the Supreme Court in 2013, and has also been an advocate for strong voter ID laws.