1. ROBERT¹ TREVARTHIAN has an unknown birthdate. He married MARGARET KLEZON. ^[2]
Child:

+

2

i.

WILLIAM2 TREVARTHIAN, m. CICELY WHALESBOROUGH.

2. WILLIAM² TREVARTHIAN (Robert¹), son of (1) Robert¹ and Margaret (KLEZON) TREVARTHIAN, has an unknown birthdate. He married CICELY WHALESBOROUGH. ^[2]
Child:

+

3

i.

BENNETT3 TREVARTHIAN, m. MARY TREMBETHOW.

3. BENNETT³ TREVARTHIAN (William², Robert¹), son of (2) William² and Cicely (WHALESBOROUGH) TREVARTHIAN, has an unknown birthdate. He married MARY TREMBETHOW. ^[2]
Child:

+

4

i.

JOHN4 TREVARTHIAN, b. about 1250/1; d. about 1350/1; m. MARGARET PEVERELL.

4. JOHN⁴ TREVARTHIAN (Bennett³, William², Robert¹), son of (3) Bennett³ and Mary (TREMBETHOW) TREVARTHIAN, was born between 1194/5 and 1351, and died between 1254/5 and 1461. He married MARGARET PEVERELL. ^[2]
Child:

+

5

i.

SIR JOHN5 TREVARTHIAN, b. about 1340; d. in 1365[4]; m. (JL-9) MATILDA CARMINOW, daughter of (JL-6) Sir Oliver and Elizabeth (POMEROY).

5. SIR JOHN⁵ TREVARTHIAN (John⁴, Bennett³, William², Robert¹), son of (4) John⁴ and Margaret (PEVERELL) TREVARTHIAN, was born between 1298/9 and 1347, and died in 1365^[4]. He married (JL-9) MATILDA CARMINOW, daughter of (JL-6) Sir Oliver and Elizabeth (POMEROY). ^{[3, 4]}
Child:

+

6

i.

SIR JOHN6 TREVARTHIAN, b. 1360[4]; d. about 1430[1]; m. JOHANNA BODRIGAN.

6. SIR JOHN⁶ TREVARTHIAN (John⁵, John⁴, Bennett³, William², Robert¹), son of (5) Sir John⁵ and (JL-9) Matilda (CARMINOW), was born 1360^[4], and died between 1396 and 1471^[1]. He married JOHANNA BODRIGAN. ^{[1, 3, 4]}
Child:

+

7

i.

IDONEA7 TREVARTHIAN, b. about 1390/1; d. about 1450; m. (AIZ-11) RALPH RESKYMER, d. in 1420[4], son of (AIZ-10) Sir John and Philippa (de WYCK).

7. IDONEA⁷ TREVARTHIAN (John⁶, John⁵, John⁴, Bennett³, William², Robert¹), daughter of (6) Sir John⁶ and Johanna (BODRIGAN), was born between 1372/3 and 1406, and died between 1386 and 1516. She married (AIZ-11) RALPH RESKYMER, son of (AIZ-10) Sir John and Philippa (de WYCK), who died in 1420^[4]. ^[4]
Child: See (AIZ-11) Ralph RESKYMER