Less than 17 hours after he came in last of four candidates in the race for District Attorney for St. Tammany and Washington parishes, Roy Burns offered his “full and wholehearted” endorsement to Warren Montgomery Wednesday.

Burns formally made his endorsement in a brief press conference outside the St. Tammany Parish Courthouse Wednesday, saying that he expected Montgomery to “restore honesty and integrity to the DA’s office.”

Burns even said he wasn’t offended by an amusing YouTube video produced by the Montgomery campaign. In the video, which took the form of an animated medieval fable, Sir Warren of Montgomery vanquished his foes, including “the burned knight.”

“I’m a Scot,” Burns said. “I thought it was humorous.”

For his part, Montgomery thanked Burns for his endorsement and said he understood how hard it could be to lose an election. Montgomery ran unsuccessfully for judge six years ago.

Montgomery’s opponent, Brian Trainor, wasted no time issuing a statement on the endorsement.

“It doesn’t surprise me to see that these two criminal defense lawyers are sticking together,” Trainor said.

Trainor led the field with 38 percent of the nearly 94,000 votes cast. Montgomery garnered 25 percent, Alan Black 20 percent and Burns 16 percent. Black has not made an endorsement in the race.

Follow Faimon A. Roberts III on Twitter @faimon.