This is the oldest signature

(please post if you have a signature with an older address)
-----BEGIN BITCOIN SIGNED MESSAGE-----
1E9YwDtYf9R29ekNAfbV7MvB4LNv7v3fGa
-----BEGIN SIGNATURE-----
1NChfewU45oy7Dgn51HwkBFSixaTnyakfj
HCsBcgB+Wcm8kOGMH8IpNeg0H4gjCrlqwDf/GlSXphZGBYxm0QkKEPhh9DTJRp2IDNUhVr0FhP9qCqo2W0recNM=
-----END BITCOIN SIGNED MESSAGE-----
This address is included in the transaction input of txid 567a9a7f9191db644a09985fad113dd6ee770eac69454317430e694305be9c56
and some of these too.