See also

William BORTHWICK's parents: William de BORTHWICK (c. 1355-1450) and Rachel de la HAYA (c. 1370-1435)
William BORTHWICK's siblings: Agnes BORTHWICK ( - ), John BORTHWICK ( - ), Margaret BORTHWICK ( - ) and Janet BORTHWICK ( - )
Beatrice SINCLAIR's other family: with James 'the Gross' DOUGLAS (c. 1371- )
Beatrice SINCLAIR's siblings: John ST CLAIR ( - ), Elizabeth ST CLAIR ( - ), Margaret ST CLAIR ( - ), Jean SINCLAIR (c. 1385- ), Mary ST CLAIR ( - ), Marjorie ST CLAIR ( - ) and Janet ST CLAIR ( - )

Family of William of BORTHWICK and Beatrice SINCLAIR

Husband:	William of BORTHWICK (c. 1384-1449)
Wife:	Beatrice SINCLAIR (c. 1390-1462)
Children:	William BORTHWICK (c. 1415-c. 1460)
	Janet BORTHWICK ( - )
	George BORTHWICK ( - )
	John BORTHWICK ( - )

Husband: William of BORTHWICK

Name:	William of BORTHWICK
Sex:	Male
Father:	William de BORTHWICK (c. 1355-1450)
Mother:	Rachel de la HAYA (c. 1370-1435)
Birth	c. 1384	Borthwick Castle, Gorebridge, Midlothian
Occupation		2nd feudal Baron of Borthwick
Death	6 Mar 1449 (age 64-65)

Wife: Beatrice SINCLAIR

Name:	Beatrice SINCLAIR
Sex:	Female
Father:	-
Mother:	-
Birth	c. 1390
Death	8 Feb 1462 (age 71-72)	Angus, Lanarkshire

Child 1: William BORTHWICK

Name:	William BORTHWICK
Sex:	Male
Spouse 3:	Mariota HOPPRINGLE ( - )
Birth	c. 1415
Occupation		1st Lord Borthwick
Death	c. 1460 (age 44-45)

Child 2: Janet BORTHWICK

Name:	Janet BORTHWICK
Sex:	Female

Child 3: George BORTHWICK

Name:	George BORTHWICK
Sex:	Male
Occupation		Archdeacon of Glasgow

Child 4: John BORTHWICK

Name:	John BORTHWICK
Sex:	Male
Occupation		Priest