 Lord Home married Mariotta (or Marion), the daughter and co-heiress of John Lauder (d. 1421), son of Sir Robert de Lawedre of Edrington and The Bass (d. 1425).A Papal dispensation by Pope Martin V was issued on 11 April 1426 at St Peter's, Rome, for Alexander de Home and Marion Lauder (de Lawedre) to marry, notwithstanding that they are related doubly in the fourth degree of consanguinity.Subsequent to that Dispensation, Robert, Bishop of Caithness, issued 'Letters' declaring all their offspring legitimate, signed at Edinburgh on 1 April 1428, and witnessed by (the next) Sir Robert Lauder, knight, Lord of Edrington, amongst others.