Family Crest - Shields and General Armory...
    Coats of arms probably originated during the First Crusade in 1097.  According to most authorities, the Europeans who took part in this march to secure the Holy Land from the Turkish Saracens were surprised to learn that the Asian warriors employed military tactics far superior to anything previously seen in Europe.  A peculiar characteristic of the Asian armies were the use of shields marked by designs and colors.  Beaten in Asia Minor, the European Crusaders returned home with stories of the military powers of their foes.  Later the use of the designs on shields and other armor found it'w way into the European armies.
    Heraldry is the handmaiden of genealogy because of this hereditary usage.  In medieval times the shield generally represented the family and the crest usually represented a particular son or family line.  In America the democratic tradition and cries of discrimination has caused interest in armorial insignia and orgins to almost disappear.
    Since each arms or crest were earned in battle or given to one individual, the individual usually proudly exhibited it while fighting against enemies. Many time the Kings allowed their armies to use the King Shields. Under heraldic rules only the first sons of a first son of the recipient of a Coat of Arms are permitted to bear their ancestor's arms.  Younger sons may use a version of their father's arms but must be changed somewhat.  If the bearer of a coat of arms dies without male heirs his daughter may combine her father's arms with her husband's arms.  Therefore the information herein is for the individuals to whom it was bought for, created for or fought for.  This info is for your viewing pleasure only and not to be duplicated and used for other purposes since you or I have not purchased or acquired the rights to use particular arms shown herein.

Hiatt - according to the Burke's General Armory... As. a lion ramp. ar.  Crest- A lion's paw erased, holding a broken spear all ppr.  Since the Hyatt lion paws are usually intact and raised, I guess the Hiatt part of the family must have been more fighters although the Hyatt lion appears on top of a Castle sometimes like ownership or protectors as it is in defense.

Hyatt - according to Burke's... Ar. a lion ramp. sa. a chief per fesse indented of the first and second. Crest- A demi lion ramp. ppr. Another Crest -A tower gu. out of the battlement a demi lion ramp. sa. Motto - Fac et spera.

Hyde - at lest 20 different Hydes were listed in Burke's book.

Hyett - (Wotton, co. Somerset, 1573). Ar. a lion ramp. gu. a chief per fesse indented of the first and sa.  Crest - A demi pegasus sa. crined or, wings endorsed, of the last.

Hyett - (Brampton, co. Hereford; Richard Hyett, Esq., was Sheriff of co. Hereford, 1601). Ar. a lion ramp.sa in chief a fesse of the second, a crescent for diff.

Hyett - (co. Gloucester). Ar. a lion ramp. sa. a chief indented of the last.  Crest - A tower gu. out of the battlements a demi lion ramp. sa.

Hyett (Painswick House, co. Gloucester). Quarterly, 1st and 4th, ar. a lion ramp. az. on a chief dancettee sa. two roses ar., for Hyett; 2nd and 3rd, erm. three cats pass. in pale az., For Adams. Crest - 1st A castle ppr. charged with four pellets, issuing therefrom a lion's head sa. in the mouth a rose slipped gu., for Hyett; 2nd A greyhound's head erased erm., for Adams.  Motto - Cor immobile.

Hyett, James  - Hand colored arms enclosed as issued to James Hyett, Constable of St. Briavel's Castle and Warden of the Royal Forest of Dean, and his descendants. James and his son Roger held the office of Constable and Warden from 1471 - 1483.

*** As you can see, most are different , even if same family...