1) In early iron forge accounts ‘bloom’ was the word for the iron that was produced in a bloomer hearth, a primitive furnace; a mass of relatively pure malleable iron which had received its first hammering.
The OED has an example of the term in the Old English period, a.1000, but then no further references until 1584-5, and then by inference, since an Act of Parliament referred to ‘any manor of iron-mills, furnace, finery or blomary’. By then it was also being used of the wrought iron produced in the finery hearth at the forge. Early Yorkshire references include: 1352 vynt quatre blomes, Creskeld
1395 ‘rendering for the wood 8d for every 12 blumhes’, Arthington. Later we have: 1568 80 dusson of colle wyll burne 96 blomes of irene, Esholt. The word is actually at the heart of a rich vocabulary which touches also on place-names and surnames and includes several attributive uses: 1507 both blome herth and strynge herth, Norton
1568 for evere blome in the blome harthe 7d, Esholt
1608 1 pair of Bloom Bellows
1 Bloom Wheel
1 Bloom Hammer
1 Bloom Wedge
2 Bloom Axes, Barnby. The minor place-name Bloom House Green in Darton, near Barnsley, is first recorded in 1584.