Membership was opened to the wives, mothers, daughters, sisters, and widows of members of the Order of Scottish Clans, as well as other women of Scottish descent or adopted by the OSC or DOS. There are two classes of membership, donation (beneficiary) and social (non-beneficiary). Donation members must be between 16 and 45 and in good health, while social members were over 45 and "not physically qualified to become a donation member." Social members are entitled to all privileges of membership other than donation fund benefits. All of its members in Canada were social members.