Who married Samuel Montagu, 1st Baron Swaythling?

Samuel Montagu, 1st Baron Swaythling (21 December 1832 – 12 January 1911), was a British banker who founded the bank of Samuel Montagu & Co. He was a philanthropist and Liberal politician who sat in the House of Commons from 1885 to 1900, and was later raised to the peerage. Montagu identified himself with Orthodox Judaism, and devoted himself to social services and advancing Jewish institutions.