For a Manne of Booques you seem to lack an ear for grammar. The expression was "on this, our Mom..", a prepositional clause describing the object of the verb to bestow. And the statement is accurate as it does not say in which post this act of profound benificence occurred.

The second instance of "this" refers back to the substantive act described int he first sentence.

Wherefore dalliest thou with me, thou flap-eared sopwit?

A