CREATE TABLE table_14903999_1 (year INT, mixed_doubles VARCHAR)

What was the earliest year orvaldur sgeirsson Lov sa Sigur ard ttir won mixed doubles
SELECT MIN(year) FROM table_14903999_1 WHERE mixed_doubles = "Þorvaldur Ásgeirsson Lovísa Sigurðardóttir"
SELECT MIN("year") FROM "table_14903999_1" WHERE "mixed_doubles" = "Þorvaldur Ásgeirsson Lovísa Sigurðardóttir"