But I tend toward the husband as the dad, with something happening to the mom, and the wife having to take him in, hating every breath of him as evidence of her husband's infidelity.

Yeah, something like this is what I'm guessing. I do think that the dishonest man is Dick's father (with what evidence? Dunno, gotta rewatch), but the whole family tree is something ugly and twisted.

The reason I thought there was still space for the religion thing, was the husband's "We're not Christians here anymore" and the wife's pregnant pause before her rebuttal, when asked for charity.

Oh, they've got issues upon issues there too, I think -- but no way is Don a crypto-Jew as I've seen speculated both here and elsewhere. I'd give odds that his people have never even seen a real live Jew before.

I do think that the dishonest man is Dick's father (with what evidence? Dunno, gotta rewatch),

Because the mom gave the man a nickel and the dad took it and said "you'll get it after you do some work" Next day, after the drifter did the work, the dad kept the nickel.

I wonder if it was supposed to be particularly telling that the dishonest man symbol was carved into the post instead of just written with chalk?

I just assumed that the symbols are always carved - otherwise one rainfall would wash them away.

He gave the boy the chalk and said that it was their method of communication.

Because the mom gave the man a nickel and the dad took it and said "you'll get it after you do some work" Next day, after the drifter did the work, the dad kept the nickel.

Sorry -- I was unclear! I caught the evidence for his being dishonest -- I only meant that I couldn't quote any proof for the man being Dick's father.

(on rewatch: in the falling-down-the-stairs flashback in "Babylon", when post-partum HolyRoller!Stepmom (the same one as in this episode) refers to baby Adam as BowlHaircut!Dick's brother and he says "he ain't my brother", Uncle Mack says "of course he is - he's got the same father". We don't actually see the Dishonest Man in that scene, but Baby Daddy = Partner of HolyRoller!Stepmom, so I gathered that Baby Daddy = Dick's father.)

So, it's mere coincidence that the Dishonest Man so resembles Don/Dick as an adult?

This is the sorta show I shoulda kept the older episodes for later comparisons, huh?

I think Dishonest Man is Dick/Don's dad. I can't imagine him letting Dick be there for any other reason. Nasty man.

And did everyone notice that the hobo was Father Phil from The Sopranos?

I think Dishonest Man is Dick/Don's dad.

Yes.

And did everyone notice that the hobo was Father Phil from The Sopranos?

No. Another rewatch (darnit!)

Maybe sometime inbetween the Hobo thing and the birth of Adam - Dishonest Man died so that even though Adam and Dick/Don are half-siblings, Adam wasn't raised by his father.