Matthew,
Reagrding John Chymbeham in your Ive pedigree. From the Feet of Fine abstract below, it appears that John Chymbeham's wife was named Alice.
http://www.medievalgenealogy.org.uk/fines/abstracts/CP_25_1_46_84.shtml
http://aalt.law.uh.edu/AALT7/CP25%281%29/CP25_1_46_80-84/IMG_0118.htm
CP 25/1/46/84, number 128.
County: Devon.
Place: Westminster.
Date: Two weeks from St Hilary, 14 Henry VI [27 January 1436].
Parties:William Bonevile, knight, Nicholas Wymbyssh', clerk, Thomas Levesham, clerk, John Bluet, Nicholas Radeford', Thomas Cokayn', John Bate, William Wenard', John More, William Beef', William Hyndeston', John Germyn', William Hunte and Richard Tovnesende, querents, and John Chymbeham and Alice, his wife, deforciants.
Property:The manor of Hode and 30 messuages, 1 dove-cot, 1 water mill, 800 acres of land, 300 acres of meadow, 200 acres of pasture and 6 pounds of rent in Hode, Merlegh', Helepayn', Choldewyll', Hochelond', Caundelych', Luscombe, Lowefalewyll' and North'hode.
Action: Plea of covenant.
Agreement:John Chymbeham and Alice have acknowledged the manor and tenements to be the right of William Wenard', of which the same William, William Bonevile, Nicholas, Thomas, John Bluet, Nicholas, Thomas, John Bate, John More, William Beef', William Hyndeston', John Germyn', William Hunte and Richard have the manor, messuages, dove-cot, mill, land, meadow and pasture of their gift, and have remised and quitclaimed them from themselves and the heirs of Alice to William, Nicholas, Thomas, John Bluet, Nicholas, Thomas, John Bate, William, John More, William, William, John Germyn', William and Richard and the heirs of William Wenard' for ever, and have granted the rent, together with the homages and all services of Richard, prior of Plympton', and his successors, George Densill', John Wy[m?]ond', John Drake and John Leya and their heirs, in respect of all the tenements which they held before of John Chymbeham and Alice in the aforesaid vills, to hold to William, Nicholas, Thomas, John Bluet, Nicholas, Thomas, John Bate, William, John More, William, William, John Germyn', William and Richard and the heirs of William Wenard', of the chief lords for ever.
Warranty:Warranty.
For this:William, Nicholas, Thomas, John Bluet, Nicholas, Thomas, John Bate, William, John More, William, William, John Germyn', William and Richard have given them 1000 marks of silver.
Standardised forms of names. (These are tentative suggestions, intended only as a finding aid.)
Persons:William Bonville, Nicholas Wimbish, Thomas Levesham, John Bluett, Nicholas Radford, Thomas Cokayne, John Bate, William Wenard, John Moore, William Beef, William Hindstone, John Jermyn, William Hunt, Richard Townsend, John Chymbeham, Alice Chymbeham, Richard, George Densill, John Wymond, John Drake, John Lee
Places: Hood (in Dartington), Marley (in Rattery), Hele, Cholwell, Hatchland (both in Rattery), 'Caundelych'', Luscombe, Lower Velwell (both in Rattery), Plympton