He made various charitable bequests by his will, and among them a gift of $50,000 to found an institution, opened as the "Astor House" in 1854, for the education of poor children and the relief of the aged and the destitute in his native village in Germany.
It is remarkable that he gives the same pecuniary bequests to Winchester and New Colleges as to his own college of Magdalen, but the latter he made residuary devisee of all his lands.
The endowments of the hospital were increased at various periods from bequests and forfeited estates.
Donations, bequests and the product of collections in churches.
Between 1881 and 1905 the bequests to existing institutions and sums left for the endowment of new institutions amounted to about 16,604,600.