Best scholarship on Aquinas's birth date

This year (2024) we are right in the middle of 3 significant anniversaries related to St. Thomas Aquinas and Pope Francis [launches three years of celebrations in his honor](https://www.ewtnvatican.com/articles/three-anniversaries-to-celebrate-thomas-aquinas-1258) : 700 years since canonization (July 18, 2023), 750 years since his death (March 7, 2024), and 800 years since his birth (2025). There are more than a dozen biographies written of St. Thomas Aquinas. **What is the latest scholarship on his birth date?** Most encyclopedias will only say ca. 1225 ([*Wikipedia*](https://en.wikipedia.org/wiki/Thomas_Aquinas) and [SEP](https://plato.stanford.edu/entries/aquinas/)) , 1224/1225 ([*Britannica*](https://www.britannica.com/biography/Saint-Thomas-Aquinas)) . Here's what the [1912 *Catholic Encyclopedia* article](https://www.newadvent.org/cathen/14663b.htm) says: > From Tolomeo of Lucca . . . we learn that at the time of the saint's death there was a doubt about his exact age (Prümmer, op. cit., 45). The end of 1225 is usually assigned as the time of his birth. Father Prümmer, on the authority of Calo, thinks 1227 is the more probable date (op. cit., 28). All agree that he died in 1274. But the above quote must have been based on scholarship that may have been superseded. **I'm looking for 2-3 proposed dates and the reasoning behind each, citing late 20th century scholarship up to today.**