Yes, I was your father then, but the real me, John Doe, that is... Long John Willoughby, was the fella with a book.
12 seconds sound clip from the Meet John Doe (1941) movie soundboard.
You can hear this line at 01:14:52 in the DVD version of the movie.
Quote context
[...]
- Ted Sheldon. Yeah, that's the one.
- But here's the funniest part of it all.
- I was the fella up there, doing the marrying.
- Justice of the Peace or something.
- You were? I thought you were chasing me.
- Well, I took you across my knee and started spankin' ya.
- That is, I didn't do it... I mean I did do it. But it wasn't me, see, I was your father then.
[...]