Super Grover

Answer: Since there's no definitive answer given in the movie, here's my guess as to how Mr. Blakemore knew that Lily never had children. The estate where Mr. B lives originally belonged to his parents/family. But his personal interest in creating a successful fabric business is due to his love for Lily, because she's the one who had dreams of becoming a clothing designer. He felt he owed everything to her. So at some point in the past, some years after his forced arranged marriage, and possibly after the passing of his parents/family members who separated him from Lily, Mr. B could have tried to locate Lily, then found out that she had died (childless) and he kept that painful information private, not telling his nephew, who was his last living relative. Mr. B tells Nisi that no fortune is worth the loss of a true love, some things are priceless.

Super Grover ★