This is the definition of the expression provided by the great British historian John Huxtable Elliott, who adds in his famous book “Imperial Spain 1469-1716” the Spanish expression in italics (villas de señorío) to this translation when he refers to the towns and villages that traditionally functioned independently of the Spanish Crown and fell under the jurisdiction or authority of either the nobility or (careful, don´t forget it, the reason why only “lordly” does not suffice!) also the Catholic Church. However, since “El Puerto de Santa María” was only under noble jurisdiction, you can just leave out “ecclesiastical” in your translation, but only for this reason, so “town under noble jurisdiction” seems appropriate here.

Just to remind of this important fact, although not directly related with your query, the Spanish “villas de señorío” disappeared with the coming into force of the first Spanish Constitution, the “Constitución de Cádiz” in 1812, still during the Napoleonic wars, a Constitution that abolished all remnants of the “Ancient Regime” in Spain.

In my opinion, the right term in this context is “town” and “village”, nothing else.

https://cheirif.files.wordpress.com/2014/08/j-h-elliott-impe...
J. H. Elliott
IMPERIAL SPAIN 1469–1716
(…)
Towns and villages under noble or ecclesiastical jurisdiction – the so-called villas de señorío – nominally remained outside this system of royal justice and administration.

This link explains that El Puerto was actually a town under noble, not ecclesiastic, jurisdiction:
https://www.diariodecadiz.es/elpuerto/Medinaceli-Condado-Pue...
Los Medinaceli y el Condado de El Puerto
El mecenazgo de Don Juan de la Cerda I Conde de El Puerto, resultó vital para el relanzamiento de la ciudad en el período de transición de la Edad Media a la Moderna.
TRAS su incorporación a la Corona de Castilla, en 1264, y después de una brevísima dependencia de la Orden Militar de Santa María de España -1272-1280-, El Puerto de Santa María pasó a ser villa de señorío a fines del siglo XIII, al ser enajenada por la Corona castellana al primer señor de El Puerto, el almirante genovés Benedetto Zaccaria a cambio de la guarda del Estrecho de Gibraltar y de las desembocaduras de los ríos Guadalete y Guadalquivir con doce galeras. Con posterioridad, el señorío jurisdiccional pasó a manos de la familia de la Cerda, descendientes directos de otro señor de El Puerto, Alonso Pérez de Guzmán el Bueno, vinculándose en el siglo XIV a los Medinaceli.