Does anyone know of any Conrads living in Austria in the early to mid 1800s?

My great great grandmother, Anna Johanna Ruebmann, was born in the German-speaking area of Helsinki, Finland, and was the daughter of Georg Fredrik Ruebmann, a piano maker, and his wife, Anna Johanna Susanna Conrad. Anna Conrad, according to family lore, was from Austria.

Does anyone know of any Austrian Conrad families from the mid to late 1800s?