Hadlay History, Family Crest & Coats of Arms
The Anglo-Saxon name Hadlay comes from when the family resided in Hadleigh or Hadley, a place-name found in numerous locations in England. The root of these names is common, however; they are all derived from the Old English roots hæth and leah, which taken together mean "forest clearing where the heather grows." 
Early Origins of the Hadlay family
The surname Hadlay was first found in Essex at Hadleigh, a parish, in the union and hundred of Rochford. 
Over in Suffolk, Hadleigh was a market-town and parish, in the union and hundred of Cosford. "This town, which was probably founded during the heptarchy, about which period a monastery is said to have been established by one of the Saxon kings, was called by the Anglo-Saxons Headlege, whence it derived its modern name. Some of the kings of East Anglia were interred here; as also was Guthrum, or Gormo, a Danish chief, who submitted to Alfred the Great, and renounced paganism after the defeat of the Danes at the battle of Ethandune, now Eddington, in the county of Wilts: a tomb is still shown in the church as the monument of Guthrum (who died in 889)" 
"In Essex and Suffolk I find two parishes of Hadleigh, and in Middlesex a parish Hadley."  Another source notes: "Hædleáh in an Anglo-Saxon will of the 10th century." 
The first record of the family was indeed found in Suffolk. Matilda de Hadlega was listed there in the Pipe Rolls of 1194. Warin de Hadlai was listed in the Pipe Rolls of Yorkshire in 1212 and John Hadley was listed in the Feet of Fines for Essex in 1390. 
Early History of the Hadlay family
This web page shows only a small excerpt of our Hadlay research. Another 67 words (5 lines of text) covering the years 1194, 1379, 1685, 1768, 1682, 1744, 1730, 1691, 1731, 1764, 1731, 1749, 1753, 1756, 1763, 1756, 1798, 1763, 1764, 1760 and 1771 are included under the topic Early Hadlay History in all our PDF Extended History products and printed products wherever possible.
Hadlay Spelling Variations
The English language only became standardized in the last few centuries; therefore,spelling variations are common among early Anglo-Saxon names. As the form of the English language changed, even the spelling of literate people's names evolved. Hadlay has been recorded under many different variations, including Hadley, Hadleigh and others.
Early Notables of the Hadlay family (pre 1700)
Notables of the family at this time include George Hadley (1685-1768), an English lawyer and amateur meteorologist, eponym of the Hadley cell and The Met Office Hadley Centre for Climate Change
John Hadley (1682-1744), was an English mathematician, inventor of the octant and precursor to the sextant around 1730. Mons Hadley and Rima Hadley on the Moon are named after him. He was the son of George Hadley, deputy-lieutenant and afterwards, in 1691, High Sheriff of Hertfordshire. "He must be distinguished from an older John Hadley who was also skilled in practical mechanics." 
John Hadley MD (1731-1764), the Professor of chemistry at...
Migration of the Hadlay family
For many English families, the political and religious disarray that shrouded England made the far away New World an attractive prospect. On cramped disease-ridden ships, thousands migrated to those British colonies that would eventually become Canada and the United States. Those hardy settlers that survived the journey often went on to make important contributions to the emerging nations in which they landed. Analysis of immigration records indicates that some of the first North American immigrants bore the name Hadlay or a variant listed above: George Hadley settled in Salem Massachusetts in 1630; David and John Hadley settled in Virginia in 1772; Martha Hadley arrived in Maryland in 1736; Mrs. R. Hadley arrived in San Francisco with her child in 1860..