Josh and Anna Duggar of '19 Kids and Counting' Welcome Baby No. 3, A Boy

Jim Bob and Michelle Duggar of TLC's "19 Kids and Counting" have expanded their family again. The couple's oldest son Josh and wife Anna Duggar welcomed their third child, a baby boy named Marcus Anthony last week.

"So excited to welcome Marcus Anthony Duggar, our third little gift from God! We are so blessed!" the proud father wrote, announcing the news on Twitter and introducing the latest addition to their world through an adorable photo.

The little boy weighed 9 pounds and 3 ounces at birth Sunday, June 2, People magazine reported. "We are so thankful that mom and baby are well! We are blessed to have our family close as we celebrate this gift from God," the couple told the magazine.

Well-wishers of the Duggar family welcomed the news and expressed their support: "Awww, he is adorable just like the other 2 children are. Congratulations to the whole family! Anna, you look great! Praying that everyone is well & happy," one of the messages that appeared on Facebook read.

Josh and Anna, who tied the knot in September 2008, are already parents to Mackynzie (3 plus) and son Michael (2). The couple announced the third pregnancy in March and had decided to keep gender of the baby a surprise until birth.

The new parents will welcome the newborn to their show through "19 Kids & Counting: GrandDuggar Makes 3!" airing on Sunday, June 16 on TLC, according to People.

"19 Kids and Counting" portrays the life of Jim Bob and Michelle Duggar and their 19 children. When the series started in 2004, the couple had 14 kids, and was titled" 14 Children and Pregnant Again!" By September 2008, the couple had 17 kids, and welcomed their 18th kid Jordyn-Grace Makiya (4) Dec.18, 2008, and 19th child named Josie Brooklyn (3) a year later in December 2009. In November 2011, Michelle announced her 20th pregnancy. However, she lost her child after a miscarriage.