~1440, Stephen born in Tregasowe, Cornwall, England, s/o 262616. Oliver Tregasowe.
1460-65, Plaintiffs: Nicholas Goly, bailiff of the chancellor's lordship of Cargaull. Defendants: Oliver Tregasowe, gent., and Stephen his son. Subject: Riotous assault, seizure of rents, etc: sureties for the peace: Cornwall. (S) UKNA, C 1/27/138.
1460-65, Plaintiffs: John Rosogan, tenant of the chancellor's lordship of Pawton. Defendants: Oliver and Stephen Tregasowe, gents. Subject: Messuages and land in Penlees, Trevythgan, and Trevanson; and seizure of cattle and goods. Cornwall. (S) UKNA, C 1/28/475.
6/28/1461, Edward IV succeeded Henry VI as King of England. [1st Yorkist King, after King Henry VI captured at the Battle of Northampton.]
1475-85, Plaintiffs: Stephen Tregasowe. Defendants: Richard [William ?] Penroos. Subject: Messuage and land in Treywyke. Cornwall. (S) UKNA, C 1/53/70.
7/6/1483, Richard III succeeded Edward IV as King of England. [Usurping never-crowned 12-year-old Edward V.]
10/30/1485, Henry VII succeeded Richard III as King of England, becoming the first monarch of the House of Tudor.
1486-93, Plaintiffs: Stephen Tregasowe. Defendants: Richard Udy, of Trevythkyn. Subject: A messuage and land in Penlese. Cornwall. (S) UKNA, C 1/171/21.
1/15/1488, Marriage Settlement. (i) Stephen Tregasow, esq. (ii) Thos. Cok. (Jn., s. of (i) to marry Joan, dtr. of (ii) before the following feast of the Ascension). (i) to make estate to Jn. and Joan to yearly value of ten marks above all charges, and their lawful hrs., with reversion to right hrs. of Jn. before following feast of the Ascension. After the same feast (ii) to pay (i) £100 and before the feast (ii) to pay excrs. and administrators of the testament of Maister Aleyn' Saves and his wife Thomasyn £110 marks for acquittal of certain lands in hands of Thomasyn and executors as appeared in deed between (i) and Maister Alayn. (ii) and Hawse (i.e. Havise) his wife to settle estate on John and Joan for their lives. (i) to repay (ii) £20 of £100 if Jn. dies without issue two yrs. after marriage. (S) Cornwall Record Office, CY/1554.
8/8/1491, Feoffment by Martin Nanspian, … Witnesses:—…, John Petitte, John Trevanyon, esquires, Stephen Tregasowe, [Cornwall] (S) Ancient Deeds, V4, 1902, A10375.
1492-1500, Stevyn died.
Child of Stephen and ?:
i. John Tregassan (65654), born ~1470 in Tregasow, Cornwall, England. [Heir]
1493-1500, Plaintiffs: Philippe Carmynowe. Defendants: John, son and heir of Stevyn Tregasowe, esquire. Subject: A loan to the said Stevyn. Cornwall. (S) UKNA, C 1/193/4.