There are a number of online resources with Ustick genealogies still to be explored and connected. There is even a Ustick township in Whiteside County, Illinois (population 624 in 2000).
A Richard Ustice witnessed the communion certificate of John Rogers of Ludgvan 1698. Ludgvan is nearby but the parish records are almost entirely illegible. In the early I8thC John Rogers and Richard were neighbours, paying rates on Carsize. In 1685 John Rogers the elder assigns to his son a tenement in Carsize. The elder was described as gent. of Truthwall. CRO Godolphin papers (DDGO) refer to a payment made concerning copper from William Usticke of -Nance.(llegible) at Truthwall, Ludgvan Dole, in 1771.
William Ustick m. Eliz Rogers Ludgvan 1705.
John Rogers of Treassowe, Ludgvan, previously of Truthwall, has daughter Elizabeth
who marries William Ustick of Leah, Buryan 1705. Son William (Buryan) 1713.
Godolphin papers (DDGO) refer to entry from RIG for payment made concerning copper
Ludgvan Dole 1771 21 years. William Usticke of Nanc...ne.
Oliver, probably William's father, is entered on Oath Rolls as having mining interest,
as is the name William (1696)
See St. Buryan Usticks (e.g. 1705 Wm Ustick m Eliz Rogers) Note James Ustick of St. Just m Mrs Catherine Rogers 23/6/1716; Mrs jane Ustick m Thomas Medcalfe of Penzance 21/11/1718
Some Ustickes had mining interests and business connections with Ludgvan, as well as marriage connections with John Rogers of Ludgvan, whom we connect with Carsize in Crowan and thus with Ustes neighbours and Ustice witness in Ludgvan.
All this seems to connect our Richard to a Rogers family BUT the marriage of Eliz Rogers was to a Ustick of the quite separate Ustick family, to William son of William son of Oliver (gent.). The Ustick(e)s are concentrated around western areas but in a different social sphere.
Although Francis (above) was spelled Ustick, and although a history by Coulthard refers to the old family of Eustiche when he means Ustick(e) and although a priest of that family is spelled Eustace in the history, I think we must carefully distinguish between Ustick and Ustes connections where possible. I am unable to go further back with Usticks than early 17thC, and naturally they contain Georges, Richards, Johns etc., but they do seem to be separate if not separable!
Nancealverne is a house near Penzance, a place where William and Philippa nee Nowell lived and baptised children.The house is said to be built by the Corveth family (History of Penzance) and Lake refers to it as the seat of the Scobell family. He also says that Rev Dr. Scobell m. Ustick heiress of Leah. Note a Susanna m. John Scobell 1810 Madron. So perhaps the house went from the Leah (Buryan) Ustickes to Scobells, and Henry is of that branch. John Warneford Scobell Armstrong lived there 1951-60.
Coulthard, writing of Henry Ustick a.k.a. Eustick, who was vicar of Breage 1755-69 and married Mary Borlase, daughter of vicar of Madron 1751) says he came from "old Cornish family of Eusrtick, of Nancealverne." He published a collection of verse epigrams and was an authority on the Cornish language.
I have no early references to Usticks or Justices in Penzance, but Madron included that area until the mid 19thC and there are plenty of Madron references.
There are many details of Usticks which are certainly separate but see Crowan, Falmouth and St Erth for examples of potential or actual confusions. There is a Justick who is also a Ustick in Paul. You can get a lot more detail and can inspect Usticks by parish. Note the considerable numbers around St Just, with plenty living in identical areas to Ustises throughout the western parishes.