Douglas-Home akaberekerwa muMayfair, London, mwana wekutanga pavana vanomwe vaLord Dunglass (mwanakomana mukuru waThe 12th Earl of Home) nemukadzi wake, Lady Lilian Lambton (mwanasikana waThe 4th Earl weDurham). Zita remukomana raiwanzo kupfupikiswa ku "Alec". Pakati pevana vadiki vevaviri ava aive munyori wemitambo William Douglas-Home.Muna 1918 12th Earl weKumba akafa, Dunglass akamutsiva mu earldom, uye zita rekuremekedza rakapfuudzwa kuna Alec Douglas-Home, uyo ainzi Lord Dunglass kusvika 1951.
Mayfair, London