Debauchee's son, Irish, can start to swim in two rivers (3,4,8)

I haven't cracked this one yet — but the brilliant team at Times for the Times have:

One of Shakespeare’s most vivid creations: I can’t resist a quote which illustrates his debauchee nature: “I was as virtuously given as a gentleman need to be, virtuous enough: swore little; diced not above seven 1 times— a week; went to a bawdy house once in a quarter—of an hour; paid money that I borrowed, three or four times; lived well and in good compass; and now I live out of all order, out of all compass” The wordplay is also pretty spectacular: we have S([on] IR[ish] can as in WC as in JOHN, and start to S[wim] between two rivers, the FAL and the TAFF