Margaret Southworth

Sir Richard de Hoghton, son of Sir Adam de Houghton returned as knight of the shire for Lancaster in 1383, 1403. He died in 1415. His wife was Joanna Radcliff*, daughter of Sir Richard de Radcliff. Their daughter married Sir John Southworth, son of Gilbert de Southworth.

~ Genalogy of the Southworths, p. 2

• All the other Sources, including A History of Lancaster, V. 6 and The Houghton Genealogy, name Joanna Radcliff to be the wife of Richard's brother Henry, and Richard's wife to be a woman named Jane or Joan or Jane.