Maria Aquinar is best known as the former wife of rock singer Sebastian Bach, the former lead singer of Skid Row. She is also known as Maria Bierk and is the mother of Sebastian’s three children: Paris, London, and Sebastiana. Maria and Sebastian were together before his rise to fame and reportedly married in 1992. Their long relationship ended in 2010.
Quick Facts
| Detail | Information |
|---|---|
| Full name | Reported as Maria Sandra Muir Aquinar |
| Also known as | Maria Aquinar, Maria Bierk |
| Birth year | Reportedly 1963 |
| Birthday | Exact date unclear |
| Known for | Sebastian Bach’s former wife |
| Profession | Reportedly model and TV personality |
| Former husband | Sebastian Bach |
| Marriage year | 1992 |
| Separation | 2010 |
| Children | Paris, London, and Sebastiana |
| Current relationship | Not publicly confirmed |
| Net worth | Not reliably known |
Maria Aquinar’s Early Life
Maria Aquinar was reportedly born in December 1963. However, available reports disagree about her exact birthday. One part of a published profile lists December 23, while another gives December 26.
Her birthplace and nationality have not been reliably confirmed.
Very little is publicly known about Maria’s childhood. The names of her parents and siblings are also not available in the information collected.
Her Education
Details about Maria’s education have not been publicly confirmed.
There is no reliable information about the schools or colleges she attended or the qualifications she earned.
Maria and Sebastian Bach Met Before His Fame
Maria and Sebastian Bach reportedly began dating in the mid-1980s.
Their relationship started before Sebastian became widely known as the lead singer of Skid Row. This means Maria was part of his life before his major success in rock music.
They remained together as Sebastian’s music career grew and later had three children.
Who Is Sebastian Bach?
Sebastian Bach is a Canadian-American singer and songwriter. His birth name is Sebastian Philip Bierk.
He became famous as the lead singer of the heavy metal band Skid Row. His work with the group made him a well-known rock performer.
Maria often appeared with Sebastian during their years together. They were seen at public events, interviews, and on television.
Their First Child, Paris
Maria and Sebastian welcomed their first child before they married.
Their oldest son, Paris Francis Bach, was reportedly born on March 4, 1988.
At the time, Maria and Sebastian were still dating. Paris arrived about four years before their reported wedding.
Maria and Sebastian Married in 1992

Maria Aquinar and Sebastian reportedly married on July 26, 1992, after being together for several years.
Some online reports have questioned whether they had a conventional legal wedding or a private ceremony. However, both supplied sources describe Maria as Sebastian’s former wife.
Their marriage lasted for about 18 years before they separated in 2010.
Their Second Child, London
Maria and Sebastian welcomed their second son in 1994.
His name is reported as London Siddhartha Halford Bach Bierk, although the spelling of “Siddhartha” varies between sources.
London was reportedly born on January 17, 1994.
Their Daughter, Sebastiana
The couple’s youngest child is Sebastiana Maria Chantal.
She was reportedly born on July 15, 2007.
Maria and Sebastian therefore share three children: Paris, London, and Sebastiana.
Maria Aquinar’s Television Appearances
Maria Aquinar became more visible because of her relationship with Sebastian.
She has been linked to the VH1 reality program I Married…, which focused on the spouses and families of famous musicians.
Maria also reportedly appeared on Supergroup in 2006.
The series placed several rock musicians together in a mansion and followed them as they prepared to perform as a group.
Maria appeared as a guest while visiting Sebastian. Model and actress Tera Patrick also appeared in the episode.
Her Modeling Career
Maria has been described as a model.
One report says her appearance on Supergroup brought additional attention to her modeling work. However, detailed information about her career is limited.
There are no reliable records in the supplied information identifying major modeling agencies, fashion campaigns, magazine covers, or awards connected to her.
It is also unclear whether modeling remains part of her current work.
Public Appearances With Sebastian
During their relationship, Maria sometimes attended public events with Sebastian.
One documented appearance took place on April 24, 2010, when Maria Bierk and Sebastian Bach attended an event at the School of Visual Arts Theater in New York City.
They were also reported to have appeared together at interviews and other entertainment events during their marriage.
Maria and Sebastian Separated in 2010
Maria Aquinar and Sebastian’s relationship ended in 2010 after many years together.
Reports differ about the exact divorce timeline. One source says they separated around July and divorced in September 2010. Another says Sebastian publicly announced their split in December 2010 and refers to a legal separation in 2011.
What is clear is that their relationship ended in 2010, after roughly 18 years of marriage and more than two decades together.
Sebastian said they had tried to make the relationship work for their family but eventually decided to separate.
What Did Sebastian Say About Their Divorce?
Sebastian later discussed some of the problems he believed affected his marriage.
He said stories about his private life that appeared online created difficulties for his family.
He also spoke about the 2010 book The Last Living Slut: Born in Iran, Bred Backstage by Roxana Shirazi. The book included claims about Sebastian’s behavior while touring.
Sebastian disputed some of those claims and said the book caused problems in his marriage.
These comments represent Sebastian’s explanation of events. Maria’s own detailed public explanation for the divorce is not available in the supplied information.
Maria’s Life After the Divorce
Maria Aquinar has kept a lower public profile since separating from Sebastian.
An older report said she became interested in fitness and vegan living and helped other people adopt a vegan lifestyle.
The same source reported that she was living in New Jersey with her youngest child at the time.
Because these reports are several years old, her current residence and daily activities are not reliably known.
Did Maria Aquinar Remarry?
There is no reliable information in the supplied sources showing that Maria Aquinar remarried after her divorce from Sebastian.
Her current relationship status is not publicly confirmed.
Sebastian, however, later remarried. He married Suzanne Le Bach in 2015.
Maria Aquinar’s Net Worth
Maria Aquinar’s personal net worth is not reliably known.
There is not enough verified information about her modeling income, assets, businesses, or other sources of income to support a specific estimate.
Maria Aquinar on Social Media
An Instagram account using the name @mariabierk has been credited as the source of photos in published coverage about Maria.
However, the supplied information does not establish whether the account is currently active or verified.
Her current follower count and level of social media activity are also not confirmed.
Interesting Facts
- Maria is also known as Maria Bierk.
- Her full name has been reported as Maria Sandra Muir Aquinar.
- She was reportedly born in December 1963.
- Published reports disagree about her exact birthday.
- She is best known as Sebastian Bach’s former wife.
- Maria and Sebastian reportedly started dating in the mid-1980s.
- Their relationship began before Sebastian became famous with Skid Row.
- Their oldest child, Paris, was reportedly born on March 4, 1988.
- Maria and Sebastian reportedly married in 1992.
- Their second child, London, was reportedly born on January 17, 1994.
- Their daughter, Sebastiana, was reportedly born on July 15, 2007.
- Maria and Sebastian have three children together.
- Maria appeared on television programs including Supergroup.
- She has been described as a model.
- Maria and Sebastian separated in 2010.
- Their exact legal divorce timeline is unclear in published reports.
- Maria reportedly became interested in fitness and vegan living after the separation.
- Her current relationship status is not publicly confirmed.
- Her current residence is not reliably known.
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