Hartwell de la Garde Grissell

In 1865 he published a work called Ritual Inaccuracies in which he attempted to "bring the rubrics of the Protestant Communion Service into line with those of the Roman Missal".

[3] Reminiscing about this period of his life he wrote: I soon came to the conclusion myself that this exhumation of scraps and snatches of an ancient rite, and the profane distortion of the rubrics of the Roman Missal for the disguise of Protestant worship was little better than an imposture.

Writing in later life he reminisced: Having had the privilege for a period of some thirty-five years of being Chamberlain to three successive Pontiffs, [I have] many diaries … These many interesting reminiscences include an Œcumenical Council, four Jubilees, three Canonizations, two Papal Consecrations of Bishops, many Consistories (including those at which Cardinals Manning, Howard, and Newman received their hats), a Blessing of the Golden Rose, and of the Ducal Sword and Cap, an 'Anno Santo,' two Conclaves, and two Coronations, as well as many pilgrimages and visits of Sovereigns to His Holiness.

He was rewarded for his service by being created a Knight Commander of the Order of St. Gregory the Great and, in 1898, one of the four Papal Chamberlains di numero, an honour usually reserved to the Roman nobility.

[7]Whilst residing in Rome Grissell amassed a vast collection of relics and sacred curios, including a portion of the Crown of Thorns and the entire body of St. Pacificus.

In 1883 Grissell was accused of proselytising and had to be escorted from Pembroke College whilst a mob of undergraduates hurled missiles and shouted 'No-popery' taunts at him.

[11] Grissell died in Rome on 10 June 1907, leaving his relic collection in trust to the Catholic Archdiocese of Birmingham, with the proviso that it be housed within a special chapel within the church of St. Aloysius Gonzaga in Oxford.