This surname AALDERT was of the baptismal group of surnames and was derived from the Old English word 'aeoelheard'. The name was originally brought into England in the wake of the Norman Conquest of 1066. Early records of the name mention Adelardus (without surname) listed in the Domesday Book of 1086. Adam Adelard, 1273 County Cambridge. John Adelard was documented in 1327 in County Yorkshire, and Richard William Adlard was listed in the Yorkshire Poll Tax of 1379. ADELARD (without surname) was a 12th century philosopher. He studied at Tours, and travelled widely in Italy and the near east, and is attested at Bath in 1130. His philosophical and scientific writings include many important translations from the Arabic into Latin. Adelard Baat was recorded as the chaplain of Magdalen, Oxford University in the year 1505. William Tollitt married Elizabeth Adlard at St. George's, Hanover Square, London in the year 1794.
The associated arms are recorded in Sir Bernard Burkes General Armory. Ulster King of Arms in 1884. The origin of badges and emblems, are traced to the earliest times, although, Heraldry, in fact, cannot be traced later than the 12th century, or at furthest the 11th century. At first armorial bearings were probably like surnames and assumed by each warrior at his free will and pleasure, his object being to distinguish himself from others. It has long been a matter of doubt when bearing Coats of Arms first became hereditary. It is known that in the reign of Henry V (1413-1422), a proclamation was issued, prohibiting the use of heraldic ensigns to all who could not show an original and valid right, except those 'who had borne arms at Agincourt'. The College of Arms (founded in 1483) is the Royal corporation of heralds who record proved pedigrees and grant armorial bearings.