When Bartolomeo Allais was born in 1775, in Avigliana, Torino, Piemonte, Italy, his father, Michele Allais, was 34 and his mother, Maria Catterina Valfri, was 29. He married Maria Maddalena Panico in 1800, in Avigliana, Torino, Piemonte, Italy. They were the parents of at least 5 sons and 3 daughters. He died on 6 June 1844, in his hometown, at the age of 69.