The aunt did not execute the will before that solicitor but did so elsewhere, in circumstances which led to the second defendant (D2) requiring the will be proved in solemn form by cross examining the witnesses who attested, and leading to an allegation of undue influence by the third defendant (D3)(which claim was later abandoned). (newlawjournal.co.uk)
Rosmini's personal holiness was recognised by the Church in solemn form when he was beatified in 2007. (faith.org.uk)
[10] In Leung v. Chang, 2013 BCSC 976, Dardi J. summarized the pertinent authorities and legal framework for analyzing a proof in solemn form claim where issues of testamentary capacity and undue influence are raised: (disinherited.com)