According to Wikipedia's Reading Abbey page, the Abbey was founded by Henry I in 1121 "for the salvation of my soul, and the souls of King William, my father, and of King William, my brother, and Queen Maud, my wife, and all my ancestors and successors."
On its Henry I page, Wikipedia is more circumspect: "[Henry] was a keen supporter of the Cluniac order [of Cluny Abbey, a French Benedictine order], probably for intellectual reasons. He donated money to the abbey at Cluny itself, and after 1120 gave generously to Reading Abbey, a Cluniac establishment. Construction on Reading began in 1121, and Henry endowed it with rich lands and extensive privileges, making it a symbol of his dynastic lines."
© Haydn Thompson 2020