19 Kids and Counting Wiki

Sierra Jo Dominguez (née Baird; formerly Molyneux) (born September 10, 1989) is the second child and first daughter of Sharon Molyneux.

She is the sister of Dakota Baird and Laken Baird.

She is the wife of Mark Dominguez and the mother of their seven children, Khai, Daylon, Asher, Ellyn, Edyn, Brooks, and Merrick.

Early life

Sierra Jo Molyneux was born on September 10, 1989, to Sharon Molyneux. She was her mother's second child, and her mother and adoptive father went on to have one more child after her.

When she was four years old, her mother married her step-father David Baird on September 4, 1994 at Thorncrown Chapel in Eureka Springs, Arkansas. David later adopted Sierra and her older brother Dakota and they both took his last name.

Sierra describes her childhood as being unpleasant and she found comfort in spending time at a neighbor's home. At six years old, she was sexually abused. After many failed attempts to tell her mother, she was finally able to. The man who abused her passed away when she was ten years old. As an adult, Sierra can't remember her life from 1st to 4th grade.

Sierra grew up around horses and had an experience at some point as a child where she was thrown off of a pregnant horse.

Sierra grew up in Carthage, Missouri and attended Carthage Senior High School. She competed in a district-wide competition in carpentry as a high schooler and was the only girl to make it that far. Many of her relatives still live in Carthage, but it is unclear when or why she moved to Arkansas.

Personal life

Relationship with Mark

Sierra met Mark Dominguez when she was eighteen years old when he was a customer at the video rental store where she worked. The two struck up a friendship as he continued coming into the store. They never officially dated, but after six months of hanging out, Mark professed his love for Sierra in April 2008.


On December 20, 2008, Sierra married Mark Dominguez.


The couple has 7 children.

On November 28, 2009, Sierra announced that she was pregnant after eleven months of taking pregnancy tests. On July 29, 2010, she gave birth to their first child, son Khai David.

On September 6, 2011, she gave birth to their second child, son Daylon Gabriel.

On January 21, 2013, she gave birth to their third child, son Asher Benjamin.

On September 1, 2014, she gave birth to their fourth child, daughter Ellyn Joy. On her 7th birthday, Sierra revealed that she almost miscarried her.

On September 24, 2015, she announced that she was pregnant with their fifth child, a girl. Her due date was on November 28, 2015. On November 12, 2015, at 2:47 p.m., she gave birth to their fifth child, daughter Edyn Grace, at Washington Regional Medical Center in Fayetteville, Arkansas. She weighed 8 pounds and 1 ounce, and was 21 inches long.

On May 10, 2017, she announced that she was pregnant with their sixth child, who was due in January 2018. On August 16, 2017, she announced that the baby would be a boy. On December 29, 2017, at 12:18 p.m., she gave birth to their sixth child, son Brooks Zechariah. He weighed 7 pounds and 11 ounces, and was 20 ½ inches long.

On April 21, 2019, she announced that she was pregnant with their seventh child. On July 8, 2019, she announced that the baby would be a boy. Her due date was October 11, 2019. On September 28, 2019, at 8:30 a.m., she gave birth to their seventh child, son Merrick Zion. He weighed 8 pounds and 12 ounces, and was 20 inches long.



Sierra attended college for a year. She had the intention of being an actress or motivational speaker, but got frustrated that she was required to take general education courses and dropped out after a year because she didn't want to be in debt for courses she didn't feel she needed.


In July 2014, Sierra and Mark worked in a ministry position at a church for three months before resigning in October 2014.

Event planning

Sierra often plans and/or coordinates parties, weddings, and showers. These services are often featured on the TLC shows 19 Kids and Counting and Counting On. Notable events she has worked on include: Michael Duggar's first birthday party in 2012, Jill Dillard's wedding in 2014, Jessa Seewald's wedding in 2014, Anna Duggar's gender reveal party in 2015, and Henry Seewald's baby shower in 2017.


In September 2020, Sierra began taking pottery lessons. In March 2021, she began working as a Intro to Wheel teacher at Fifth Street Studio in Bentonville, Arkansas. She started her own pottery business, SJD Pottery, and began selling on May 30, 2021.


Sierra appeared on the TLC shows 19 Kids and Counting and Counting On as a family friend of the Duggar Family.

Wedding involvement

Sierra was the flower girl at her mother Sharon's wedding to her step/adoptive father David Baird on September 4, 1994.

She was a bridesmaid at her friend Joy-Anna Duggar's wedding to Austin Forsyth on May 26, 2017.