Who is Lord and Lady Wickham from Life with Jeeves and what is their importance?

Lord and Lady Wickham own a country estate at Skeldings Hall, Hertfordshire. They are good friends of Aunt Agatha. Roberta, their red-haired daughter, has a tendancy to get Bertie Wooster into trouble...... Jeeves believes that she is in need of a husband who commands authority and has considerable strength of character. As far as Jeeves is concerned, this takes Bertie out of the running.