He had assistance from the politician and activist Giuseppe Mazzini , who was in London at the time .
The church was built at the request of Saint Vincent Pallotti , and remains under the control of the Pallotine order which he founded .
Saint Vincent Pallotti had assistance from the politician and activist Giuseppe Mazzini , who was in London at the time .
The church was built at the request of Saint Vincent Pallotti , and remains under the control of the Pallotine order which he founded .