He was a son of Arnold St Leger, of Ulcombe, MP for Kent. of his great-grandson Sir Anthony St Leger, KG He married Margery Donet, daughter and heiress of James Donet of Silham in the parish of Rainham, Kent, by whom he had children including:
Sir James St Leger, of Annery in Devon, who married Anne Butler, a daughter of Thomas Butler, 7th Earl of Ormond, great-aunt of Queen Anne Boleyn and heiress of Annery. His small inscribed monumental brass survives in the Annery Chapel of Monkleigh Church, inscribed as follows: Orate pro aia Jacobie Seyntlegb Armig qui obiit viii0 die mesis Februarii Anno Dm MCCCCC0 IX0 cui ai piciet De Amen. Below is a very worn brass of an escutcheon showing the arms of St Ledger. His grandson was Sir John St Leger of Annery, Sheriff of Devon in 1560, Member of Parliament.
Bartholomew St. Leger, mentioned in his father's will, "I will they enfeoff Bartholomew my son when 21 or at marriage of and in the manors of Eylnothynighton and Eylnothyng-tonesdowne with appurtenances and in one tenement called Pendecourte with appurtenances in Holingborne and in all other lands and tenements in Holyngbourne to him and his heirs males". He was one of the leading rebels included in Lord Scrope's indictment at Great Torrington, November 1483, Scrope having been given a commission by King Richard III to hold a sessions in Devon to examine the loyalty of the gentlemen of Devon to the crown, as opposed to his rival the Earl of Richmond, the future King Henry VII. At this court many of the gentry of Devon were indicted of high treason, many fled to Brittany to join the Earl, but two were captured and beheaded in Exeter, namely Thomas St Leger and Sir John Kame. He married Blanche Bourchier, of whom a stone effigy exists in Shirwell Church, Devon, widow of Philip Beaumont of Shirwell in North Devon and of Gittisham in East Devon, a member of parliament for a constituency in Devon and Sheriff of Devon in 1469, and a daughter of William Bourchier, 9th Baron FitzWarin of Tawstock, feudal baron of Bampton and heir to a moiety of the feudal barony of Barnstaple, both in Devon. One of the daughters and co-heiresses of Bartholomew St Leger was Margaret St Leger, first wife of John Copleston, "The Great Copleston", of Copleston, Devon.
Margaret St Leger, wife of John de Clinton, 5th Baron Clinton of Maxstoke.
Death and burial
He died in 1441 and was buried in the chapel of St. Thomas the Martyr in the parish church of Ulcumbe, as he requested in his will. His Latin will dated 12 December 1441 survives in the records of the Prerogative Court of Canterbury. A fragment of his monumental brass survives in Ulcomb Church, now displayed as a mural in the north aisle. The inscription is lost, but is said to have been: Here lyeth John Seintleger Esquyer, and Margerie his wyfe, sole daughter and heir of James Donnett... 1442. A rubbing showing the date 1442 survives in the collection of the Society of Antiquaries.
