Stylman (Hervey's Grants, fol.27). Granted by William Hervey, Clarenceaux King of Arms [1557 - 1567]; Steeple Ashton, co. Wilts; granted 6 May, 1562.
Sa. a unicorn pass. or, on a chief of the second three palets of the first. Crest- A camel's head erased az. biletee, muzzled, collared, lined, and ringed or, on the collar three hurts.

6 May 1562 is the actual recording date of the Stylman Coat of Arms during the reign of Queen Elizabeth I - the date of original usage is unknown

The Stylman/Styleman/Stylleman Coat of Arms is well established as that of a Crusader Knight of the 1200-1400 time
Research has revealed the following -
The camel is a middle-eastern one-hump camel - the significance of the blue color has not yet been determined
The chain around the neck is of the type worn by pilgrims to and from the Christian Crusades of 1100 - 1400
The camel tether is from that same period
The unicorn is an ancient symbol of the Hebrew tribe of either one of Joseph's sons - Mannasseh and Ephriam - as well as of the supporters of the Coat of Arms of Scotland - which is the locale to those two tribes migrated
The unicorn is an established medieval symbol of Jesus the Christ
The trotting unicorn signifies that the original owner of the coat of arms died of wounds received in battle
The three doors in the mantle [top] of the shield represent the Holy Trinity
Robert Stylleman b/circa 1445 was Bailiff for the Abbess of Romsey
Romsey Abbey was of the Order of Saint Benedict which was the earliest Order of the Roman Catholic Church to participate in the Christian Crusades - Romsey Abbey had been established by the son of Alfred the Great - Alfred's grand-daughter was the 1st Abbess of Romsey in the 900s
A Bailiff is a senior-level Knight who reported only [in this situation] to the Grand Master of the Order of Saint Benedict - the Grand Master reported directly to the Bishop of Rome aka The Roman Catholic Pope
The title of Bailiff was inhertited by Robert Stylleman from generations past - there were several Bailiffs serving the Abbess of Romsey in the later 1400s - Romsey Abbey owned several thousand acres of farm land
Robert Stylleman was Bailiff in the area of Steeple Ashton, a thriving commercial center - a Bailiff's duties included enforcing rents and tithes to Romsey Abbey as well as settling disputes and sitting in judgement on cases of less than capital-offence; capital offences were referred to the Crown
Robert Stylleman often presented sermons in The Church of St. Mary the Virgin in Steeple Ashton; at least once, a distinguished member of the audience was King Henry VII
Robert Stylleman's English Crown title was Gent - for Gentleman - that was passed to his sons - George Stileman b/1654 possessed the title Gent
King Henry VIII changed the course of all this when he declared himself head of the English Catholic Church - independent of the Bishop of Rome

The Styleman Coat of Arms currently displayed in Ashton House, located in Steeple Ashton, Wiltshire County, England shows the unicorn with all four legs on the ground which accurately depict that Doctor William Stillman of Steeple Ashton, the owner of the Styleman Coat of Arms in the 1843 timeframe, died of natural causes.

The spelling of the name has varied - mostly Stylleman, Styleman, Stylman, Stileman, Stilman, Stilleman, Steelman and Stillman.

This is the registration of the Styl(e)man Coat of Arms as granted on 6 May 1562 during the reign of Queen Elizabeth I. Please note that the registration name leaves the "e" out of the spelling of the name. Since this is not consistent with the spelling of the Stylleman/Styleman/Stileman name as it originates from Steeple Ashton, the "e" has been deliberately added by The Stillman Genealogy Home Page site curator. The spelling Styleman is consistent with that of Henry Styleman when he received the Styleman Le Strange coat of arms 180 years later as depicted and described in subsequent paragraphs.

The spelling Styleman is used in the title as it is the form used by the College of Arms in their records of the family dating back to the 1531 Heraldic Visitation of Wiltshire. In spite of several printed references, including British Museum Addit. M.S. 37147-37150, to the granting or confirmation of Arms on 6 May 1562, from the College of Arms to Geoffrey Stillman was as follows: The arms were certainly not granted in 1562 as you suggested, because they are in fact recorded as early as 1531 in the Heraldic Visitation of Wilts [Wiltshire County] made by Thomas Benolt, Clarenceux King of Arms [1511 - 1534]. No Letters Patent covering the grant have been issued as this was not the usual practice at that time. According to the verbal advice from Chester Herald, the registration would have been made on evidence of use by three generations or 80 years which would date back to about 1451.

From Visitation of Wilts 1565-1625, Volume 1443, fol. 242 - Styleman Le Strange (Hunstanton, co. Norfolk).
Quarterly. 1st and 4th, gu. two lions pass.ar., for LE STRANGE; 2nd and 3rd, sa. a unicorn pass. or, on a chief of the second three billets of the first, for STYLEMAN. crests- 1st: A lion pass. or, tail extended, for LE STRANGE; 2nd: A camel's head erased az. billetee, muzzled, collared, lined, and ringed or, on the collar 3 hurts, for STYLEMAN. Supporters-Dexter, a stag ar. with a lion's forepaws and tail, collared; sinister, a lion gu. Motto: [said by Rouge Dragon Pursuivant of the Herald's Office not to belong to the arms as originally granted] Mihi parta tueri - translation - To protect what is provided to me.
This motto is recorded in the name of Styleman le Strange, which refers to the Norfolk County branch of the Stillman family and is of much later date than the Steeple Ashton Arms - 1832.

This is the registration of the Styleman Le Strange coat of arms. This shows reference to the original Steeple Ashton coat of arms of 6 May 1562.

The information contained in this page is based on STILLMAN GENEOLOGY from Steeple Ashton compiled by Geoffrey Stillman of Australia in 1969; received from Raymond Stillman of Holt, Trowbridge, Wiltshire 1984.
The two coat of arms exerpts are obviously from Ancestry.Com

Information and assistance were obtained from John Neitz whose page on Elizabethan Heraldry is an excellent source of information on coats of arms