Hiram in 1851 :
1851 census :
HO107/2367, Folio 203, Page 28
Yorkshire, Bridlington
Chestnut Cottages
Hiram Porterfield, head, wdr, 50, Boatman Coast Guard, b. Durham, Spittal
Jane, dau, unm, 18, Dress Maker, b.Sussex, Hastings
Grace, dau, 13, Scholar. b. Sussex, Hastings
Charles, son, 11, Scholar, b. Sussex, Hastings
In all the later census returns they were living in Scarborough.
Also, the one and only time I can see the name Portfield written was on the marriage registration.
Pels.