Romaguera was born in Barcelona during the Catalan Revolt (Guerra dels Segadors) against Castile in 1642 and lived until 1723, according to the epitaph of him published in the manuscript Historia Eclesiástica del principado de Cataluña by the Mercedarian historian Pere Serra i Postius.
There is no known mention of him in public life until he began his ecclesiastical career in 1661, the date of his first benefice; he served both in the Inquisition and as a Canon Law Professor at the University of Barcelona.
According to the epitaph by Postius, Romaguera was a renowned preacher and intellectual, and also represented the Catholic Church in the Courts convened by Philip V in 1701–1702.
For Postius, Romaguera was a unique individual, "One of the most famous men that Catalonia has had in Letters, Prudence and Government at the end of the previous Century and beginning of the present one.
He was an ingenious, sententious, sweet, gallant and brilliant Catalan poet, as his book shows" [translation of Spanish original] (f.104r).