Isabella Offenbach Maas (March 11, 1817 – February 19, 1891) was an opera singer, pianist and the older sister of composer Jacques Offenbach.[1] She was born in Cologne, Germany and is known for bringing the opera to Galveston, Texas.
^Ornish, Natalie (27 April 2016). "Maas, Isabella Offenbach". Handbook of Texas Online. Texas State Historical Association. Retrieved 18 December 2017.