The Duggar clan just keeps on growing. This time, it’s a grandduggar.

Josh and Anna Duggar welcomed a son on Wednesday, weighing 8 lbs., 5 oz., according to People.

The baby boy’s name has yet to be revealed, but People reports it will begin with an “M” just like his big sister MacKynzie, age 20 months.

“19 Kids and Counting” Is Available On Demand at xfinityTV

Anna, 22, delivered the baby at the family’s home in Tontitown, Arkansas.

The Duggar family – Josh, 23, is the eldest son of Jim Bob and Michelle Duggar – appears on the TLC show “19 Kids and Counting.”

A TV special titled “19 Kids: First Grandson” airs Sunday at 8/7c on TLC.