She has another sibling named Christian Thoma. Her sister, Louise works at the University of Delaware in Newark, Delaware. Furthermore, she belongs to the Kadazan ethnic background and Borneo heritage.Īndrea LA Thoma has a younger brother, Jonathan Thoma who serves in the resort sales department at ‘Marriott Hotels.’ Also, he is a director in Hyperion Motors. She is of Malaysian-American nationality. Her mother, Judy celebrates her birthday on 4th December. Happy Anniversary Mama and Bapa ♥️ May we all still act like we are dating 35 years into our marriages” Caption: Andrea LA Thoma and husband Grant Gustin (Source: Pinterest) “Somehow my dad has survived 35 years with my mom.