By Debbie Emery - Breaking Celebrity News Reporter

Four years and two murder trials since his family was massacred, Dr. William Petit has finally found happiness with a new love and the uncle of convicted killer Joshua Komisarjevsky has offered his congratulations on their engagement, Breaking Celebrity News can exclusively reveal.

"Of course, we wish him the very best," Christopher Komisarjevsky told Breaking Celebrity News in an exclusive interview. "We are happy that he’s found happiness after the tragedy."

Komisarjevsky was found guilty of 17 counts on October 13 for the grisly 2007 murders of Jennifer Hawke-Petit and her daughters, Hayley, 17, and Michaela, 11, and the vicious beating of Dr. Petit in their Cheshire, Connecticut home.

As Breaking Celebrity News previously reported, Petit, 55, proposed to Christine Paluf, 34, after Christmas but they have not yet set a wedding date.

While he has not spoken to the happy couple since the wedding announcement, Christopher has met Petit's new fiancée. "She was in the courtroom during the trial so we had a chance to say hello," he told Breaking Celebrity News.

Despite being the uncle of Joshua, who was sentenced to death last December for his part in the horrific triple murders, Christopher has long been a strong supporter of Dr. Petit and has grown close to his family during the lengthy court proceedings.

"We have exchanged Christmas cards. We hope to stay in touch with them," he told Breaking Celebrity News, although he doesn't expect to attend the nuptials.

"We wouldn’t go to the wedding, I don’t think that would be appropriate."

The hideous crime that his neph