Lady Natasha Letitia Sarah Jane Wellesley Obstromsky Ponsonsky Smythe Smythe Smythe Smythe Smythe Oblomov Boblomov Dob, third Viscountess of Moldavia (played by Helen Lederer) is a foreign countess Richie met through Lily Linneker's Love Bureau.

Richie posed as the Duke of Kidderminster to secure a date with her. She agreed to marry him and unwittingly admitted that she'd lost her entire fortune in a civil war and had to marry soon lest she be penniless forever. She appears in Digger.