Ian--This is all what I have for Downey's: Perhaps, you might be able to compare with your records.
Robert Downey b.1807/8 in Nbld.d. before 1873, married Ann Fitchard b 1810 N.Shields,Nbld.her parents, John b 1780,Forfar, Scot.(Seaman) Ann ?? b.1779/80 ,Tanfield, Durham.Died 1864 Tynemouth.Nbld.
Son #1-John b 1837/38 N. Shields Nbld-(d.1875 to 1880-location ?) Boat Bldr. M.Aug 1873,Tynemouth Nbld-Primitive Methodist Church). to Isabella Davidson(b. 25 Apr 1843, Butterwick, Durham)-her parents Robert(occup-Gardener)& Margaret Barrass B.1813/14)-Their 2 sons(#1) John B.1874 N.Shield Nbld.(church organ builder, married Eliz.Jane Deverall March 1895,Christ Church,Gateshead Durham) In 1930 they resided 17 South Villas,Camden Square, London.Their 3 children.-John Deverall -b1895/6, Elizabeth Jane b.1898/9 and Ethel Isabella b.1902/3. Brother to John was Leonard (b.Westoe, S. Shields Durham Nov 1875 (My Grandfather. -he immig to Canada 1904-retd 1905 & married Ethel Beatrice Hartley,b.1879s-London, Eng. Her parentsHenry B. 1839,St. george, Han Sq.Ldn & Ann Creed b.1834, Reading Berks,
Son #2-Robert,B. 1842, N.Shields, Nbld. (Age 18-tailor 1861)-No other info. Hoping you or someone will fill in some gaps especially before the 1840's
Thanks for reading all this.. Janet