E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
That.
Seven thats may follow each other, and make sense.
1
For be it known that we may safely write
Or say that that that that that man wrote was right;
Nay, een that that that, that that THAT has followed,
Through six repeats, the grammars rule has hallowed;
And that that that that that that THAT began
Repeated seven times is right, denyt who can.
My lords, with humble submission that that I say is this: That that that that that that that gentleman has advanced is not that that he should have proved to your lordships.Spectator, No. 86.