I accept that the position on marriage can be very complicated. You mention appentices could not marry, without permission, until completion of their appenticeship; another problem are soldiers in the 19th century. Technically soldiers could not get married without their commanding officer's permission. but as marriages were restricted to approximately six men per company of 100 many soldiers married without pemission. Consequently whilst the marriage was legally valid it was not recognised by the army. However if permission was subsquently granted; to gain recognition by the army the parties could go through a second marriage.
Any way my main query. You say that under Ecclesiastical law parties could marry from around 7 years old. My understanding was that Ecclesiastical law (both Anglican and Catholic) distinguished between betrothal, marriage and consummation. Betrothal was recognised from age 7 but marriage not until 12 years old for girls and 14 for boys (Source: [color=#000000][size=2]John Witte, [/size] [/color][size=2][i]From Sacrament to Contract: Marriage, Religion, and Law in the Western Tradition, [/i]p159). Is this incorrect?[/size]