The area of the Follansbee Farm/s (earlier a Village) was in the parish of Jarrow. According to Peter Ackroyd in Foundations, The History of England from It’s earliest beginning to the Tudors pg. 50 “Jarrow means ‘among the Jyrwe’, a small tribe found in the Fen district as well as in Northumberland.”
Peter also mentions on pg. 100 that because of the difficulty with the French pronouncing English Yarrow became Jarrow. So interesting enough, The parish of Jarrow was originally Yarrow.