You ask, "Is Stella Maris the name of a house or an institution possible Catholic?"
Was your person a seaman? Many ports around the world have the Mission to Seafarers, often called 'Stella Maris'.
The Stella Maris Seafarers' centres provide pastoral care, services and support for seafaring people. Stella Maris centres are part of the Catholic Church's official missionary work in its care of seafarers. These centres are a key component of the Apostleship of the Sea (AoS), an agency which is operated globally under the auspices of the Pontifical Council for the Pastoral Care of Migrant and Itinerant People in Rome. The AoS acts for the Church among the People of the Sea, ever dutiful in the service of hospitality.
Wikipedia says,
"The Apostleship of the Sea is an agency of the Catholic Church. It is also sometimes known as Stella Maris (Star of the Sea), and its patron is the Virgin Mary as Our Lady, Star of the Sea. Founded in Glasgow, Scotland in the early 20th century, it provides pastoral care to seafarers through chaplaincies in ports in all continents of the world.
AoS provides practical and pastoral care to all seafarers, regardless of nationality, belief or race. AoS port chaplains and volunteer ship visitors welcome seafarers, offer welfare services and advice, practical help, care and friendship. The Apostleship of the Sea in Great Britain is part of an international network known to the maritime world as Stella Maris, working in more than 250 ports around the world."