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When Patrick Clancy took the stand in his ex-wife's murder trial, he had already begun building a new life hundreds of miles away in New York City, over four hours away from the Duxbury, Massachusetts home where Lindsay Clancy killed their her kids.

Lindsay Clancy, 36, faces three counts of first-degree murder in the deaths of her children — Cora, Dawson and Callan, all under age 6 — who were found strangled at the family's home in January 2023. The prosecution concluded its case Monday morning, and her defense attorney has since begun presenting arguments, asserting that she was in the grip of postpartum psychosis when she killed her children.

Patrick Clancy, a business applications sales executive at Microsoft, has since divorced Lindsay, relocated to New York City and wed Dr. Rachel Danis in a Central Park ceremony in spring 2026. She reportedly moved into Patrick's Upper East Side apartment in 2025.

He moved to New York City in spring 2023, just months after Lindsay Clancy killed her three children, according to public records obtained by the New York Post, and filed for divorce in February 2024.

Kevin Reddington, Lindsay Clancy's defense attorney, said in court that Patrick "suffered one of the worst tragedies that anyone could ever suffer."

"How that guy is not an emotional basketcase is beyond me, and he is trying hard to move on with his life. As the court is aware, they’re divorced, he’s remarried, he has a family," Reddington said.

Danis and Patrick Clancy have no children together, though she has spoken publicly about wanting to become a mother.

"I remember when I first froze my eggs, I felt like, I mean, even sometimes still, feel like this black sheep," she said on the Fertility Forward podcast in September 2024. "I think for women, it’s just really hard. We have so much pressure to balance career and personal growth, but like, we’re riddled with this fertility stuff."

Patrick Clancy was seen with his wife, Rachel Danis, on Aug. 13 at an apartment in Manhattan, a source told TMZ.

A shared passion for hiking and fitness brought the couple together, Men's Journal reported.

Patrick Clancy, along with family members, founded the Heard Foundation, which seeks to "change how parents are cared for—so no parent faces perinatal mental illness in silence and no family is left behind."

According to the foundation's website, it was "founded in memory of Cora, Dawson, and Callan Clancy."

Just days after Lindsay Clancy killed her kids in January 2023, Patrick wrote on a GoFundMe page, "I want to ask all of you that you find it deep within yourselves to forgive Lindsay, as I have...The real Lindsay was generously loving and caring towards everyone - me, our kids, family, friends, and her patients."

"The very fibers of her soul are loving. All I wish for her now is that she can somehow find peace," he wrote.

Patrick Clancy remained composed while testifying in his ex-wife's murder trial, though he struggled to hold back tears as he spoke about his children.

"Cora was into princesses and she had a lot of friends," Patrick Clancy said. "She just liked taking care of people."

He said that Callan, the youngest child, "was just a happy baby."

Patrick Clancy said Dawson "liked the television show Paw Patrol" and was into firefighters and trucks.

Donna Rotunno, a criminal defense attorney, noted in an interview with Fox News Digital that Patrick Clancy's own mother, Susan Clancy, was a witness for the defense.

"She is extremely sympathetic to what Lindsay was going through. And if you thought that, you know, anybody would wanna be upset about the loss of their grandchildren, it would be her, correct? She's the father's mother, and she's there supporting Lindsay so much so that she nodded to her as she walked out of the courtroom in this unbelievable, I think, show of humanity," Rotunno said.

WATCH:

Sheila Cavanaugh, a board-certified chaplain at Brigham and Women's Hospital, testified Thursday that during her visit with Lindsay Clancy on Jan. 31, 2023 — just days after she killed her children — the woman accused of murder told her, "I am so glad my children are safe."

Cavanaugh said she responded that the children were safe in heaven with God, and the two prayed together.

Judge William Sullivan ended court early on Thursday after one witness testified, sending jurors home until Friday.