I have found Alexander's death registration on Scotland's People which confirms his parents as W2 and gives his occupation as Ship Carpenter. The informant was his granddaughter Mary Law, 3 Affleck Street, Aberdeen.
There is reference to two other spouses in addition to Helen Marr but the names are unknown and left blank on the registration.
There is reference to two other spouses in addition to Helen Marr but the names are unknown and left blank on the registration.