My husband's maternal great-grandfather was Ernest Thierstein and although the surname does not seem to have survived here in Malta there are a lot of Maltese Thierstein descendants. For a start, my husband was one of fourteen children, most of whom married and are themselves grandparents. My husband's mother was Rosette(married Muscat)(1922-2011), daughter of Julietta(married Cassar), daughter of Ernesto. It appears that Julietta was the only sibling who married. Julietta had 5 children, 2 boys, Carmel and Ernest and 3 girls, Rosette, Frances and Teresa. The boys emigrated to Australia and one of the girls, Frances (b.1924), a spinster, survives Rosette and Teresa, who was also a spinster.