Robert Lembke Almack’s Assembly Rooms Ivy swept up the short train of her peacock blue silk ball gown, then took her father’s arm and walked up the staircase and into the assembly rooms. Tinsdale and his mother followed closely, with the Sinclair brothers and sisters trailing behind.p. Naturally, the engagement would be announced at Almack’s, the most rigid and proper of the assembly rooms in London…or England, for that matter. Ivy decided that the location fit Tinsdale like a finely tailored coat. Judging from the endless train of carriages lining the street outside, everyone of the ton would be in attendance. Even those who had not planned on using their subscriptions that evening must have abruptly changed their minds. How could they not? For the Times had somehow discovered and promptly reported that the Duke of Sinclair and his notorious offspring would grace Almack’s with their presence that very night for a momentous announcement. The ballroom was abuzz with chatter when the Sinclair party entered.