Church of England Ordination Requirements
A Parliamentary statute enacted in 1571 (13 Eliz. I, c. 12) stated that:
"...no man could be ordained before reaching the age of 24 or admitted to a benefice unless he were a deacon and at least 23 years old; prohibited men from being admitted to ecclesiastical benefices unless they held the BD degree or were specially admitted as a preacher by the diocesan bishop..."
That quote is from "The Oxford History of the Laws of England, Vol. 1, The Canon Law and Ecclesiastical Jurisdiction from 597 to the 1640s," R. H. Helmholz (2004), p. 274. This statute remained in effect into the 1630's.
I interpret this to mean you could be ordained a deacon before turning 23. And you could be ordained as a priest at the age of 23 if you had already been ordained a deacon. Otherwise, you needed to be 24 to be ordained a priest.
An article on FamilySearch titled "Clergy of the Church of England," says:
"The person who originally founded, built or endowed the church had the right as its patron to make presentation to the bishop of a suitable person to be its incumbent. This right [is] called the advowson..."
"The person presented, who might well be a relative of the patron, had usually already been ordained by his local bishop as a deacon or priest in order to celebrate mass and hear confession. He was supposed to be over 21 and of legitimate birth. It is said that the usual age at ordination was 23 years and six months."
From https://familysearch.org/wiki/en/Clergy_of_Church_of_England_(in_En...
I interpret both of the above quotes taken together to mean that you needed to be at least 21 to become a deacon but the usual age was 23 years and six months. Then, if you had already been ordained a deacon, you could become a priest at the age of 23. Otherwise, you needed to be 24 to become priest.
According to the Church of England records, Rev. Richard Denton was ordained a deacon on 3 September 1622 and was ordained a priest on 6 August 1623. Therefore his latest birth date would have been in 1600.
The FamilySearch article ("Clergy of the Church of England") gives some good background about the clergy, their history in the 17th century, how they were financed (often by a local patron) and how curates were essentially assistant priests. The Wikipedia article about Curates might also be helpful. https://en.wikipedia.org/wiki/Curate
Below is a more extensive and informative quote from "The Oxford History of the Laws of England, Vol. 1," "Content of the Statutes," p. 273
"Within this framework. the legislators of the Elizabethan and early Stuart Parliaments found considerable room for manoeuvre. Elisabeth and the first two Stuart kings would not permit Parliament tn intrude too far into the affairs of the church. but just where the line was to he drawn no one could say for sure. And the Henrician precedents encouraged efforts to bring the law into accord with the needs of the time and the customs at the English people. at least as these needs and customs were perceived by members at Parliament..."
p. 274
"… Second. some of the parliamentary statutes amended or clarifed parts of the traditional canon law. Failure of the proposed Reformatio legum ecclesiasticarum meant that there would be no substitution of a new set of laws, but it did not mean there would be no alterations at all. Henrician and Edwardian statutes had made changes. quite apart from extinguishing papal powers. There was good reason to expect that there would be more. And there were other changes to come, although none of those that went through Parliament and received the royal assent could be called revolutionary from the perspective of legal practice. A statute on the qualifications requisite in the ordination of clergy enacted in 1571 (13 Eliz. I, c. 12) provides a representative example. It had four major goals. The act required assent by the clergy to the Thirty-Nine Articles enacted by Convocation; stated that no man could be ordained before reaching the age of 24 or admitted to a benefice unless he were a deacon and at least 23 years old; prohibited men from being admitted to ecclesiastical benefices unless they held the BD degree or were specially admitted as a preacher by the diocesan bishop; and provided that title to present to any benefice should not be lost to the patron by deprivation of an incumbent until six months had passed after notice of the vacancy had been given to the patron."
"How did the provisions square with the existing canon law? In some respects, they re-enacted it. The provision about the age required for ordination and conferral of a benefice with cure of souls was the same as the rule given in the applicable papal decretal (X 1.6.7). A second decretal had stated that the attainment of the age of 14 was enough (X 1.14.3), but the communis opinio among the medieval jurists had treated the latter decretal as a special concession for a special situation, holding that the former properly stated the common law of the church. The English statute in effect adopted this communis opinio, attempting to end any surviving argument and, at least by implication, foreclosing the possibility of dispensation in favour of infants."
The Oxford History of the Laws of England, Vol. 1, The Canon Law and Ecclesiastical Jurisdiction from 597 to the 1640s, R. H. Helmholz (2004)
https://books.google.com/books?id=enU0FHy5OeAC&pg=PA274&lpg...