Eltwyd - Iltud what's in a name

Eltweed or Elwyd was b 1585  His name is unique in that form  AJP has have long  wondered how it came about until she came across the name of a C6th Welsh saint 

 ILLTUD OR ILLTYD I 

Monastic Wales   A fascinating site

Glamorgan has numerous  churches dedicated to Illtyd, first and foremost St Illtyd's Church in  Llantwit Major, which stands on what is believed to have been the site of the monastery.

The hamlet of St Illtyd in the very south of Wales within the historic boundaries of Monmouthshire. and  not far from the Bristol Channel  & across that water is Bristol & Somerset where we have a collection  of Pomeroys
In the mid 1500's "colleges" in association with "new" Cathedral schools were established ...in Bristol, Gloucester, etc; to provide a latin education that were attended by a broader class of people...minor gentry, etc; to replace what was lost in the confiscations and closures of the Dissolution .
It seems  possible that young students attending Latin Grammar Schools had access to the early manuscripts which might have .included  stories of early Celtic saints..

St Illtyds Way .... interesting
As a result of his piety, sagacity, and miraculous power, Saint Illtyd was held in high veneration throughout Wales.

Quote The Abbey at Llantwit Major ... was founded by the the great Saint Illtyd. Illtyd’s college is believed to be Britain’s earliest centre of learning – Saint David, Saint Patrick, and Gildas were all educated there.
  ~~~~~

John Stowe's 1603 list of the bishops of London includes an "Iltuta" who is sometimes conflated with Illtud 

AML  picked up on this 
Interestingly  Illtud - Illtyd  a C6th  CELTIC Saint. In the Stories of his life... at the the end of the "manuscript.."...
"There is no virtue or vigour where wickedness abides;"

 the Pomeroy motto is somewhat similar   VIRTUTIS FORTUNA COMES - Fortune is the companion of valour
BUT there is a 500 year lapse in time between C6th & C11th  & presumably the de la Pomerai family had the motto before 1066